Skocz do pozycji: 1.

Tytuł:

Comodon Kretzoi and Kretzoi, 2000 replaces Phascolodon Simpson, 1925 [Mammalia], not Phascolodon Stein, 1859

Autorzy:

Cifelli, R L

Powiązania:

https://bibliotekanauki.pl/articles/20482.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Phascolodon gidleyi
Comodon
paleontology

Źródło:

Acta Palaeontologica Polonica; 2002, 47, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 2.

Tytuł:

Tarsal morphology of the pleuraspidotheriid mammal Hilalia from the middle Eocene of Turkey

Autorzy:

METAIS, GREGOIRE
ERDAL, OZAN
ERTURAÇ, KORHAN
BEARD, K. CHRISTOPHER

Powiązania:

https://bibliotekanauki.pl/articles/945274.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
pleuraspidotheriidae
paleogeography
eocene
turkey
anatolia

Opis:

Pleuraspidotheriids are a group of primitive ungulate mammals that, until recently, were thought to be restricted to the late Paleocene of Western Europe. It has been hypothesized that this family actually survived in Central Anatolia until at least the middle Eocene. However, these anachronistically young Anatolian “survivors”, including the genus Hilalia, were previously documented mainly by dental remains. Here, we describe the previously unknown astragalus of Hilalia saribeya, which confirms the pleuraspidotheriid affinities of the genus, and supports phylogenetic reconstructions that place Hilalia as the sister group of Pleuraspidotherium. The morphology of the astragalus suggests sub-cursorial plantigrade locomotion for H. saribeya, although its tarsal morphology remains generalized enough that scansorial capabilities cannot be ruled out. The evolution of Hilalia is addressed in the context of the apparent geographic isolation of Central Anatolia during the Eocene. The endemic character of the mammalian fauna of Central Anatolia during the middle Eocene emphasizes how the complex paleogeography of the northern margin of Neotethys impacted local biotas in a region situated at the crossroads of very distinctive biogeographic zones.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 1; 173-179
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 3.

Tytuł:

Second specimen of Corriebaatar marywaltersae from the Lower Cretaceous of Australia confirms its multituberculate affinities

Autorzy:

Rich, Thomas H.
Krause, David W.
Trusler, Peter
White, Matt A.
Kool, Lesley
Evans, Alistair R.
Morton, Steven
Vickers-Rich, Patricia

Powiązania:

https://bibliotekanauki.pl/articles/2216260.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Multituberculata
Cimolodonta
Cretaceous
Gondwana
Australia

Opis:

A second specimen of the Australian cimolodontan multituberculate Corriebaatar marywaltersae from the same locality (Flat Rocks) as the holotype and previously only known specimen, reveals far more anatomical information about the species. The new specimen, composed of most of a dentary containing a complete p4 and alveoli for the lower incisor and the lower first and second molars, exhibits a suite of features consistent with allocation of Corriebaatar to Cimolodonta and further confirms the presence of multituberculates on Gondwana during the Mesozoic. The revised (older) age of the Flat Rocks locality to latest Barremian (mid-Early Cretaceous) establishes C. marywaltersae as the oldest currently known cimolodontan. This has profound biogeographic implications for the distribution of multituberculates on Gondwana as well as globally, particularly in light of the fact that Corriebaatar appears to be a relatively derived member of Cimolodonta.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 115-134
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 4.

Tytuł:

A morganucodontan mammalia form from the Upper Jurassic Morrison Formation, Utah, USA

Autorzy:

Davis, Brian M.
Jäger, Kai R.K.
Rougier, Guillermo W.
Trujillo, Kelli
Chamberlain, Kevin

Powiązania:

https://bibliotekanauki.pl/articles/2216314.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Morganucodonta
dentition
Jurassic
Morrison Formation

Opis:

We describe two skull fragments of a new morganucodontan from the Cisco Mammal Quarry (Upper Jurassic Morrison Formation), preserving portions of the palate and snout in excellent 3D detail as well as the complete upper postcanine dentition. Morganucodontans are best known by isolated elements and relatively complete skulls of several species of Morganucodon from the Lower Jurassic of Wales and China; this group is fundamental to our understanding of the early evolution of mammals. Cifellilestes ciscoensis gen. et sp. nov. possesses derived features of the snout paired with plesiomorphic construction of the molars; the distal premolars are complex and there is an unusually low count (two) of strongly imbricated molars. This character combination expands craniodental variation for the group. We sampled mudstone from the Cisco Mammal Quarry for ash-fall zircon analysis and obtained a date of 151.50 ± 0.28 Ma. This dates the locality to the earliest Tithonian and slightly younger than other major dated mammalbearing localities in the Morrison Formation. Cifellilestes represents one of the youngest members of this group and extends the record of morganucodontans in North America by more than 30 Ma. Morganucodontans are a rare component of Late Jurassic faunas but display surprising dental diversity through variations in a tooth count and cusp morphology of a deeply conserved, generalized mammalian tooth pattern, which was fully established in brasilodontid (non-mammalian) ancestors at least 80 my prior.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 77-93
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 5.

Tytuł:

Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea

Autorzy:

Paolucci, F.
Buono, M.R.
Fernandez, M.S.
Cuitino, J.

Powiązania:

https://bibliotekanauki.pl/articles/2082284.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Physeteroidea
Preaulophyseter gualichensis
Miocene
Patagonia
Argentina

Opis:

Sperm whales (Physeteroidea) include today only two genera of morphologically disparate odontocetes: the largest toothed whale known (Physeter macrocephalus) and small sized forms (Kogia spp.). In contrast, their fossil record indicates a high diversity for the group during the Miocene, with over 20 species recognized. Miocene marine sediments from Patagonia (Argentina) record this diversity, including at least five species. Among them, Preaulophyseter gualichensis, from the Miocene of Gran Bajo del Gualicho Formation, has been one of the most enigmatic. Despite the fragmentary nature of the type and referred materials (isolated teeth and periotics), which casts some doubts on its validity, this species has not been revised since its original description. In this contribution, we re-describe the materials referred to P. gualichensis, revise the taxonomic status of the species and evaluate the phylogenetic signal of ear bones among Physeteroidea. Our results indicate that the physeteroid tympano-periotic complex morphology is poorly diagnostic at the species level. Intraspecific variation (including ontogeny and sexual dimorphism) and/or taphonomic processes cannot be ruled out as the causes of the minor differences observed among specimens. We suggest that sperm whale tympano-periotics retain many plesiomorphic characters and are diagnostic only between kogiids and non-kogiid physeteroids. Based on the fragmentary and isolated state of the studied specimens, and the lack of diagnostic characters in both teeth and periotics, we consider P. gualichensis as nomen dubium and we re-assign the referred specimens as Physeteroidea indet. A conservative morphology of the tympano-periotic and, to a lesser extent, the nasal complex in sperm whales, might result from the morpho-functional constraints imposed by a highly specialized but successful echolocation system.

Źródło:

Acta Palaeontologica Polonica; 2021, 66, 1; 63-76
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 6.

Tytuł:

Morphological and systematic re-assessment of the late Oligocene “Halitherium” bellunense reveals a new crown group genus of Sirenia

Autorzy:

VOSS, MANJA
SORBI, SILVIA
DOMNING, DARYL P.

Powiązania:

https://bibliotekanauki.pl/articles/945319.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
tethytheria
sirenia
dugonginae
evolution
oligocene
italy

Opis:

“Halitherium” bellunense is exclusively known from a single individual from upper Oligocene glauconitic sandstone near Belluno, northern Italy. According to a review of its morphological basis, which consists of associated cranial elements, some vertebrae and ribs, this specimen is identified as a juvenile, because the first upper incisor (I1) and supposedly second upper molar (M2) are not fully erupted. However its juvenile status allowed only cautious conclusions on its taxonomy and systematic affinity. The presence of a nasal process of the premaxilla with a broadened and bulbous posterior end, and a lens-shaped I1, corroborate an evolutionarily-derived status of this species that places it well within the sirenian crown group Dugonginae. Considering these new data and in order to avoid continued misuse of the inappropriate generic name of Halitherium, a new generic name, Italosiren gen. nov., and emended species diagnosis are supplied for this taxon.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 1; 163-172
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 7.

Tytuł:

A new Oligocene site with terrestrial mammals and a selachian fauna from Minqar Tibaghbagh, the Western Desert of Egypt

Autorzy:

VAN VLIET, HENDRIK JAN
SCHULP, ANNE S.
ABU EL-KHEIR, GEBELY A.M.M.
PAIJMANS, THEO M.
BOSSELAERS, MARK
UNDERWOOD, CHARLES J.

Powiązania:

https://bibliotekanauki.pl/articles/945646.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
palaeomastodontidae
hyracoidea
anthracotheriidae
chondrichthyes
oligocene
egypt

Opis:

A new fossil site at Minqar Tibaghbagh, east of Siwa, in the Egyptian Western Desert is described. This represents the first place in Egypt outside the Fayum Depression yielding Paleogene, terrestrial mammals. Initial studies indicate the presence of palaeomastodonts, hyracoids, and anthracotheres, presumably early Oligocene in age. As only surface prospecting has been performed, more taxa will almost certainly be discovered in future investigations here and probably also elsewhere in the surroundings. A comparison is made with the most important contemporaneous sites in Libya and Egypt that yield terrestrial mammal remains. The selachian fauna from a higher level in the section confirms the Paleogene age of the subjacent strata. It is compared with selachians faunas from the early Oligocene Eastern Tethys Ocean at other places (the Fayum Depression in Egypt, and sites in Oman and Pakistan), and differs from these sites in being fully marine. Contrary to earlier studies, the open marine mudstones of the Daba’a Formation at Minqar Tibaghbagh are overlain by Paleogene marine sediments of most probably early Oligocene age and not early Miocene marine sediments as previously reported. These strata represent not only a new site with great potential for future finds, but also allows for biostratigraphic correlation.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 3; 509-525
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 8.

Tytuł:

Hipparion macedonicum revisited: new data on evolution of hipparionine horses from the Late Miocene of Greece

Autorzy:

KOUFOS, GEORGE D.

Powiązania:

https://bibliotekanauki.pl/articles/945650.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
equidae
systematic
evolution
palaeoecology
miocene
greece

Opis:

The new expeditions to the Axios Valley (Macedonia, Greece) provided a new set of fossils from the various localities. Among the material collected from the Late Miocene hominoid bearing mammal locality Ravin de la Pluie (RPl) were some remains of Hipparion macedonicum, which was originally described from this locality. The most important is the skull and associated mandible, the first from the type locality. The new material is compared with the previously collected material of the taxon from the Vallesian and Turolian levels of Greece, as well as with corresponding material from Eurasia. The RPl skull is compared with the type skull of H. matthwei, a taxon, which several times has been referred as synonym to H. macedonicum. The comparison indicated several differences which distinguish the two species. Hipparion macedonicum has a continuous stratigraphic range from the Vallesian to middle Turolian and it is possibly present in the late Turolian. The comparison of the chronologically different samples of H. macedonicum indicates that the Vallesian form of H. macedonicum has larger size, shorter narial opening, longer tooth rows, rich enamel plication, more elongated and narrow plis, more robust metapodials and less running legs than the Turolian form. Some of the morphological changes are related to the habitat, which was more closed, warmer and wetter in the Vallesian than Turolian.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 3; 519-536
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 9.

Tytuł:

Dietary ecology of the extinct cave bear: evidence of omnivory as inferred from dental microwear textures

Autorzy:

JONES, D. BRENT
DESANTIS, LARISA R.G.

Powiązania:

https://bibliotekanauki.pl/articles/945458.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
ursus spelaeus
carnivore
dental microwear
pleistocene
europe

Opis:

The diet of the extinct European cave bear, Ursus spelaeus, has widely been debated. Diverging from the extant brown bear (Ursus arctos) approximately 1.2 million years ago, the cave bear is one of the most ubiquitous fossil bears occurring in Europe during the Middle and Late Pleistocene. Early morphological studies suggested that the cave bear was likely specialized on processing tough and/or abrasive foods, while later two-dimensional low-magnification microwear studies suggested that they were omnivorous and may have consumed more bone than U. arctos. Here, we used dental microwear texture analysis (DMTA) to further interpret the diet of the cave bear. Microscopic wear features were assessed and compared to modern ursids, including the cave bears’ closest living relative, U. arctos. Results suggest that U. spelaeus consumed a diet with a diversity of textural properties, similar to most other bears and only distinguishable from the hyper-carnivorous polar bear (Ursus maritimus). Further, only U. maritimus can be distinguished from all bear species here examined (i.e., the giant panda bear, Ailuropoda melanoleuca; sun-bear, Ursus malayanus; spectacled bear, Tremarctos ornatus; American black bear, Ursus americanus; and U. arctos), with significantly greater area-scale fractal complexity (Asfc) of microwear surfaces. The DMTA of A. melanoleuca also has significantly lower Asfc than T. ornatus and U. americanus, consistent with observed dietary behavior. As modern bears vary their diets seasonally and across their range, it may be difficult to characterize the dietary ecology of extinct bears using dental microwear alone. Nevertheless, DMTA here demonstrates that U. spelaeus had a diet distinct from the hyper-carnivorous U. maritimus and instead likely consumed food with textural properties most similar to other herbivorous/omnivorous bears. Lastly, the European cave bear and North American giant short-faced bear (Arctodus simus) may have had similar diets as evident from DMTA, with U. spelaeus potentially eating tougher food items.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 4; 735-741
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 10.

Tytuł:

Pleistocene Equid Brain Endocast from Shanxi Province, China

Autorzy:

Hu, Y.
Chen, Y.
Wang, S.
Sun, Q.

Powiązania:

https://bibliotekanauki.pl/articles/946031.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
equus
equid brain
pleistocene
shanxi province
china

Opis:

Brain endocasts are rare in the fossil record because they are only preserved under exceptional conditions. An equid brain endocast from the early Pleistocene of Wanrong County, Shanxi Province, China, is reported in this paper. Measuring approximately 140 × 95.2 × 83 mm, the new specimen represents a relatively advanced adult horse brain. Comparisons indicate that it is more derived than those of Hyracotherium and Mesohippus in having an expanded neocortex, and more than those of Pliohippus and Hipparion in having an enlarged network of branching sulci; in most characters involving these sulci, the Shanxi brain conforms to the extant species Equus caballus. The sulcus diagonalis of the Equus brain appears to have evolved conservatively during the early Pleistocene, whereas the sulcus suprasylvius seems to have evolved rapidly. The specimen demonstrates that the development of a high degree of complexity predates the enlargement of the brain in the horse, which increased in length, breadth, and especially height during the late Cenozoic.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 2; 253-258
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 11.

Tytuł:

A roe deer from the Pliocene of Hidalgo, central Mexico

Autorzy:

Jimenez-Hidalgo, E.
Bravo-Cuevas, V.M.

Powiązania:

https://bibliotekanauki.pl/articles/20337.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Cervidae
roe deer
Capreolus
Hidalgo
Mexico
Pliocene

Opis:

Mexican Pliocene cervids are very poorly known. We report on new fossil material of the roe deer Capreolus constantini recovered from the Pliocene Atotonilco El Grande Formation of Santa Maria Amajac, Hidalgo (central Mexico). The specimens were collected from a series of layers of friable to moderately indurated polymictic conglomerate supported by a sandstone-tuffaceous-calcareous matrix. This species was formerly known only from the late Pliocene of Udunga, Russia, thus implying a dispersal event to North America around 4.0 Ma. This cervid is one of the very small number of mammals recorded from the poorly sampled Pliocene temperate deposits of Mexico.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 12.

Tytuł:

Reconstructed masticatory biomechanics of Peligrotherium tropicalis, a non-therian mammal from the Paleocene of Argentina

Autorzy:

Harper, Tony
Adkins, Caleb F.
Rougier, Guillermo W.

Powiązania:

https://bibliotekanauki.pl/articles/2216215.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Meridiolestida
Peligrotherium
mastication
vertical kinematic phase
bifulcral

Opis:

The large, bunodont, mammal Peligrotherium tropicalis is an enigmatic member of the earliest Paleocene fauna of Punta Peligro, Argentina. While being a contemporary of many of the earliest large-bodied “archaic ungulates” in the Northern Hemisphere, P. tropicalis is a remnant of an endemic Mesozoic non-therian lineage. The interpretation of P. tropicalis as an omnivore/herbivore has therefore been difficult to evaluate, given its phylogenetic placement outside of the therian clade, and lack of many of the molar characteristics thought to be essential for the forms of mastication seen in marsupials and placentals. Here we present a three-dimensional generalization of the classical “bifulcral” biomechanical model of bite force and joint force estimation, which is capable of accommodating the wide range of mediolateral force orientations generated by the muscles of mastication, as estimated by the geometry of their rigid attachment surfaces. Using this analysis, we demonstrate that P. tropicalis is more herbivorously adapted (viz. shows a greater Group 2 relative to Group 1 jaw adductor advantage for producing postcanine orthal bite forces) than even the hypocarnivorous carnivorans Procyon lotor and Ursus arctos, and is similar to the ungulates Sus scrofa and Diceros bicornis. This similarity also extends to the mediolateral distribution of relative muscle group advantage, with Group 1 muscles (responsible for effecting the initial adduction of the working-side hemimandible into centric occlusion) having greater orthal bite forces labially; and Group 2 muscles (those responsible for producing occlusal grinding motions) being more powerful lingually. Finally, we show that P. tropicalis preserves relatively little of its orthal bite force magnitude at high gape, suggesting that large-object durophagy would not have been a likely feeding strategy.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 177-201
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 13.

Tytuł:

A new early Pliocene murine rodent from the Iberian Peninsula and its biostratigraphic implications

Autorzy:

Pinero, P.
Verzi, D.H.

Powiązania:

https://bibliotekanauki.pl/articles/2082273.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Murinae
biochronology
diversification pattern
early Ruscinian
Europe

Opis:

In the last years, a murine identified as Paraethomys aff. abaigari has been repeatedly recognized in several early Pliocene localities of the Iberian Peninsula. We have revised these occurrences, as well as other samples of similar morphology, and propose that all these records correspond to a new species. We diagnose Paraethomys baeticus sp. nov. based on a large sample from the early Ruscinian site of Baza-1 (Guadix-Baza Basin, Spain). It is a medium-sized representative of the genus, with relatively well-developed longitudinal connections both in upper and lower molars, but incomplete stephanodonty. M1 displays high tubercles t6–t9 and low t4–t8 connections. M1 and, to a lesser extent, M2 have posterior spurs on t1 and t3. The t9 and t12 are absent in M2. In m1, a round islet of enamel between the anteroconid and the protoconid-metaconid is regularly observed, as well as a general lack of medial anteroconid, moderate labial cingulum with large posterior accessory cuspid, and longitudinal spur. The new species differs from other European representatives of the genus Paraethomys mainly in its size, which is intermediate between that of the small-sized Paraethomys meini and the large-sized Paraethomys abaigari. In addition, both the size and relative width are smaller than those of Paraethomys jaegeri. The frequency of posterior spurs on t1 and t3 of M1 and M2 is higher than that of P. meini and lower than that of P. jaegeri. The new species here described represents a key biochronological and biostratigraphic marker, since it is restricted to levels of late early Ruscinian age. Thus, this species is useful for establishing divisions within the early Ruscinian, and becomes a characteristic taxon for the early Pliocene in the terrestrial record of the Iberian Peninsula. Magnetobiostratigraphic correlations suggest a chronological range for P. baeticus sp. nov. between ca. 4.6 and 4.3 Ma.

Źródło:

Acta Palaeontologica Polonica; 2020, 65, 4; 719-731
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 14.

Tytuł:

First palaeanodont [?pholidotan] mammal from the Eocene of Europe

Autorzy:

Gheerbrant, E
Rose, K.D.
Godinot, M.

Powiązania:

https://bibliotekanauki.pl/articles/20777.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Neustrian
Eocene
mammal
Mammalia
Palaeanodonta
Europe
paleontology
paleobiogeography

Opis:

We report the discovery in the early Eocene French locality of Le Quesnoy (MP7, Neustrian) of the first palaeanodont from the Eocene of Europe, and the first metacheiromyid from outside of western North America. The species, known from a dentary and a few postcranial bones, belongs to the genus Palaeanodon, and it is one of several North American immigrant taxa that characterize the Paleocene–Eocene faunal turnover in Europe. Palaeanodon sp. from Le Quesnoy is close in size to P. nievelti from the early Wasatchian of North America. However, it shows noticeable primitive features such as a more prominent ventral keel on the metacarpal III and a probably elongated and bilobed pc4 (= p4), although this is inferred from the infilled alveolus. Additional original features are also noticed on the tentatively referred astragalus. These minor differences suggest that the Le Quesnoy form represents a new species, but the available material remains inadequate to name it. The morphology and the size of the metacarpal are actually closer to P. parvulus (Clarkforkian)—P. nievelti (Wasatchian) intermediates, suggesting a sister−group relationship with the latter (if Palaeanodon sp. from Le Quesnoy is not shown to belong to a distinct European lineage). This would indicate a dispersal at least as old as P. nievielti and a correlation of Le Quesnoy not later than early Wasatchian. The discovery of Palaeanodon in Le Quesnoy fits paleobiogeographically well with the hypothesis of a relationship of palaeanodonts to pholidotans, which have their earliest record in the middle Eocene of Europe (Messel).

Źródło:

Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 15.

Tytuł:

Masticatory musculature of Asian taeniolabidoid multituberculate mammals

Autorzy:

Gambaryan, P P
Kielan-Jaworowska, Z

Powiązania:

https://bibliotekanauki.pl/articles/21302.pdf

Data publikacji:

1995

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

masticatory musculature
mammal
Cretaceous
Mammalia
Asia
paleontology
Multituberculata

Opis:

The backward chewing stroke in multituberculates (unique for mammals) resulted in a more anterior insertion of the masticatory muscles than in any other mammal group, including rodents. Multituberculates differ from tritylodontids in details of the masticatory musculature, but share with them the backward masticatory power stroke and retractory horizontal components of the resultant force of all the masticatory muscles (protractory in Theria). The Taeniolabididae differ from the Eucosmodontidae in having a more powerful masticatory musculature, expressed by the higher zygomatic arch with relatively larger anterior and middle zygomaticridges and higher coronoid process. It is speculated that the bicuspid, or pointed upper incisors, and semi-procumbent, pointed lower ones, characteristic of nontaeniolabidoid multitliberculates were used for picking-up and killing insects or other prey. In relation to the backward power stroke the low position of the condylar process was advantageous for most multituberculates. In extreme cases (Sloanbaataridae and Taeniolabididae), the adaptation for crushing hard seeds, worked against the benefit of the low position of the condylar process and a high condylar process developed. Five new multituberculate autapomorphies are recognized: anterior and intermediate zygomatic ridges: glenoid fossa large, flat and sloping backwards (forwards in rodents), arranged anterolateral and standing out from the braincase; semicircular posterior margin of the dentary with condylar process forming at least a part of it; anterior position of the coronoid process; and anterior position of the masseteric fossa. The postorbital process in those multituberculates studied is situated on the parietal and the orbit is very large.

Źródło:

Acta Palaeontologica Polonica; 1995, 40, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 16.

Tytuł:

A Cretaceous mammal from Tanzania

Autorzy:

Krause, D W
Gottfried, M.D.
O'Connor, P.M.
Roberts, E.M.

Powiązania:

https://bibliotekanauki.pl/articles/23042.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammal
Gondwana
Cretaceous
Mammalia
Africa
Tanzania
Gondwanatheria
paleontology

Opis:

We report here the discovery of a Cretaceous mammal from the “Red Sandstone Group” of southwestern Tanzania. This specimen is one of only a very few Cretaceous mammals known from Gondwana in general and Africa in particular. The specimen consists of a short, deep left dentary that bore a large, procumbent central incisor, and five single−rooted, hypsodont cheek−teeth. The specimen is very tentatively identified as a sudamericid, and thus may represent the first African record of an enigmatic clade of mammals, the Gondwanatheria, which is otherwise known from the Late Cretaceous and Paleogene of several other Gondwanan landmasses. Unfortunately, the precise age of the specimen could not be determined. If it is pre−Campanian and if its identity as a sudamercid is corroborated through subsequent discoveries, it represents the earliest known gondwanatherian. If the specimen is from the Campanian or Maastrichtian, and again assuming its identification is correct, it has the potential to refute a recently formulated biogeographic hypothesis predicting the absence of certain terrestrial and freshwater vertebrate taxa, including gondwanatherians, in Africa (i.e., those that evolved elsewhere on Gondwana after Africa became an isolated landmass).

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 17.

Tytuł:

Reconstruction of the cranial musculature of the paraceratheriid rhinocerotoid Pappaceras meiomenus and inferences of its feeding and chewing habits

Autorzy:

Wang, Hai-Bing
Bai, Bin
Gong, Yan-Xin
Meng, Jin
Wang, Yuan-Qing

Powiązania:

https://bibliotekanauki.pl/articles/945214.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
perissodactyla
paraceratheriidae
pappaceras meiomenus
chewing
eocene
china

Opis:

The paraceratheriid Pappaceras is the earliest unequivocal rhinocerotoid genus to date, for which the osteological morphology is relatively unique compared to other perissodactyls. Due to the poor preservation condition, paleobiological aspects of Pappaceras (or forstercooperiines), such as chewing and feeding behavior, still remain unknown. Under the Extant Phylogenetic Bracket, the cranial musculature of the newly erected Pappaceras meiomenus has been reconstructed using two-dimensional illustrations, drawings and interpretations of the position and general morphology of cranial muscles for which origins and insertions on the skull are visible. In this study, eight muscles are reconstructed, described and compared to the corresponding muscles known or inferred in other perissodactyls, including the m. levator nasolabialis, the m. levator labii superior, the m. caninus, the m. zygomaticus, the m. masseter, the m. temporalis, the m. buccinator and the m. pterygoid. The reconstruction of the masticatory muscles suggests that Pappaceras meiomenus is strictly herbivorous, probably folivorous, with a primary component of vertical biting. The relatively well-developed m. pterygoid (particularly the m. pterygoideus medialis) indicates that Pappaceras meiomenus is similar to hyracodontids, having more advantages in rotary chewing than other non hyracodontid rhinocerotoids. The configuration of basicranial features shows differentiation between non-hyracodontids and hyracodontids, demonstrating that the well-developed, specialized postglenoid process and the wide glenoid fossa, along with the postcotyloid process of the mandible, serve as a strong fulcrum during the power stroke in non-hyracodontids. Based on its rostral morphology, we suggest that Pappaceras meiomenus was a general browser. The morphology of its incisors and canines further indicate the ability to feed on hard plants, using the postulated puncture-crushing and grinding function.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 2; 259-271
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 18.

Tytuł:

Old and new specimens of a poorly known glyptodont from the Miocene of Patagonia and their biochronological implications

Autorzy:

GONZÁLEZ RUIZ, LAUREANO RAÚL
REATO, AGUSTINA
CANO, MARTÍN
MARTÍNEZ, OSCAR

Powiązania:

https://bibliotekanauki.pl/articles/945276.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
glyptodontidae
palaehoplophorus
miocene
río mayo formation
patagonia

Opis:

The Palaehoplophorini is a tribe of glyptodonts represented by fragmentary specimens for which the oldest records occur in the Pedregoso and Río Mayo formations (middle–late Miocene) in Patagonia (Argentina). The mammal fossils from those formations were the basis for the recognition of the Mayoan fauna, placed between the Friasian sensu stricto/Colloncuran–Laventan and the Chasicoan faunas. The only identified glyptodont from Río Mayo Formation is Palaehoplophorus meridionalis represented only by its type material (i.e., caudal tube) and the precise provenance is unknown. We describe a new specimen of Palaehoplophorus meridionalis collected in the Río Mayo Formation represented by associated osteoderms of the dorsal carapace and postcranial elements, plus part of the type and assigned specimens that remain unpublished from the old collection. This is the first description of osteoderms from the dorsal carapace of this species and postcranial elements (the first for a Palaehoplophorini), and the first glyptodont with precise provenance from Río Mayo Formation. As result of improving the description and emending the diagnosis, we agree with previous authors about the basal position of Palaehoplophorus meridionalis within the tribe. Finally, we review the Glyptodontidae association of the Mayoan fauna, which are exclusively represented by Palaehoplophorini (Palaehoplophorus meridionalis and Palaehoplophoroides rothi) and Glyptodontidae indet. This association supports a greater affinity of this fauna with the younger Chasicoan than with the older Friasian sensu stricto/Colloncuran–Laventan faunas.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 1; 181-194
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 19.

Tytuł:

The Interatheriinae notoungulates from the middle Miocene Collon Cura Formation in Argentina

Autorzy:

VERA, BÁRBARA
REGUERO, MARCELO
GONZÁLEZ-RUIZ, LAUREANO

Powiązania:

https://bibliotekanauki.pl/articles/945958.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
notoungulata
interatheriidae
neogene
south america
patagonia
argentina

Opis:

he Interatheriinae (Notoungulata, Interatheriidae) from the Collón Curá Formation (Colloncuran South American Land Mammal Age, SALMA) are revised here, based on old and new collections from western Neuquén, Río Negro, and Chubut provinces where this geologic unit crops out. After a detailed study of the holotype of Icochilus endiadys, we conclude that its cranial and dental morphology are diagnostic of the genus Protypotherium, and as a result we include I. endiadys in this genus (P. endiadys comb. nov.). Deciduous dentition and postcranial remains are also ascribed to P. endiadys, which allows us to determine its pattern of dental eruption and describe part of its limbs, expanding its diagnosis. In addition, we describe a new species of Protypotherium, P. colloncurensis sp. nov., which differs from P. endiadys in having larger size, a more robust mandible, strongly imbricate upper molars, a well-developed parastyle on P1, a subcircular and non-overlapping p1, a much reduced p2, and a smaller talonid on p3–4. Based on the revision, we identified only one genus of Interatheriinae in the Collón Curá Formation (i.e., Protypotherium). Protypotherium endiadys extends its distribution from Neuquén to Chubut provinces, including Río Negro; the new species, in turn, was only recognized in Río Negro Province, appearing together with P. endiadys in Estancia El Criado, Comallo, and Chico River localities. Discriminant and cladistic analyses were performed including P. endiadys, the new taxon, and other middle Miocene interatheres, and yielded strong support for our systematic conclusions. A thorough phylogenetic analysis of Protypotherium is provided for the first time. Based on this analysis, Protypotherium and Miocochilius form a monophyletic group supported by four synapomorphies.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 4; 845-863
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 20.

Tytuł:

Shoulder height, body mass, and shape of proboscideans

Autorzy:

LARRAMENDI, ASIER

Powiązania:

https://bibliotekanauki.pl/articles/945713.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
proboscidea
mammuthus
palaeoloxodon
deinotherium
body mass
shoulder height

Opis:

In recent decades there has been a growing interest in proboscideans’ body size, given that mass is highly correlated with biological functions. Different allometric equations have been proposed in the recent decades to estimate their body masses, based on a large number of living examples. However, the results obtained by these formulae are not accurate because extinct animals often had different body proportions and some were outside the size range of extant samples. Here the body mass of a large number of extinct proboscideans has been calculated by the Graphic Double Integration volumetric method which is based on technical restorations from graphical reconstructions of fossils employing photos, measurements and comparative anatomy of extant forms. The method has been tested on extant elephants with highly accurate results. The reconstructions necessary to apply this method give important information such as body proportions. On the other hand, equations to calculate the skeletal shoulder height have been developed, with a large number of published shoulder heights being recalculated. From the shoulder heights, several equations were created to find out the body mass of a series of extant and extinct species. A few of the largest proboscideans, namely Mammut borsoni and Palaeoloxodon namadicus, were found out to have reached and surpassed the body size of the largest indricotheres. Bearing this in mind, the largest land mammal that ever existed seems to be within the order of Proboscidea, contraryto previous understanding.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 3; 538-574
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 21.

Tytuł:

A new large mammal from the Ypresian of Morocco: evidence of surprising diversity of early proboscideans

Autorzy:

Gheerbrant, E
Sudre, J.
Cappetta, H.
Iarochene, M.
Amaghzaz, M.
Bouya, B.

Powiązania:

https://bibliotekanauki.pl/articles/20144.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

locality
Eocene
Proboscidea
mammal
Ypresian
Mammalia
Africa
Morocco
paleontology

Opis:

We describe a new primitive proboscidean, Daouitherium rebouli gen. et sp. nov., from the early Ypresian of the Ouled Abdoun Basin, Morocco, which also yielded Phosphatherium. It is the earliest known large mammal from Africa and one of the oldest known proboscideans. It has true lophodont molars similar to those of Barytherium and Numidotherium. It is closer to these genera and more advanced than Phosphatherium (e.g., morphology of the mandible), but it is also primitive in striking features known also in Phosphatherium (absence of diastema, retention of two additional teeth in front of p2). A parsimony analysis of Daouitherium suggests its intermediate phylogenetic position between the basal, small Phosphatherium and the large, more derived Numidotherium and Barytherium. Daouitherium is a better candidate for the ancestry of N. koholense than Phosphatherium, but it is also specialized. Daouitherium and Numidotherium may belong to the same basal radiation of “Barytherioidea”. However, the family referral of Daouitherium is uncertain (Numidotheriidae?). The discovery of such a large and derived proboscidean with respect to Phosphatherium in the same African beds of such antiquity is evidence of an unexpected early diversity of proboscideans and of the old origin of the order. It also supports the African origin of Proboscidea s.s.

Źródło:

Acta Palaeontologica Polonica; 2002, 47, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 22.

Tytuł:

First spalacotheriid and dryolestid mammals from the Cretaceous of Germany

Autorzy:

Martin, Thomas
Averianov, Alexander O.
Schultz, Julia A.
Shellhorn, Rico
Schwermann, Achim H.

Powiązania:

https://bibliotekanauki.pl/articles/2216247.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Spalacotheriidae
Cifellitherium
Crusafontia
Dryolestidae
Beckumia
Minutolestes
Cretaceous
Balve

Opis:

The new spalacotheriid “symmetrodontan” Cifellitherium suderlandicum gen. et sp. nov. from the Barremian–Aptian of the Balve locality in northwestern Germany is the first record of spalacotheriids in Central Europe. The new taxon is based on one lower and two upper molars. Cifellitherium is similar to Spalacotherium, but differs by smaller stylocone and larger paraststyle on the upper molars, and a labially interrupted cingulid on the lower molar. The new dryolestid Minutolestes submersus gen. et sp. nov. is based on one lower and two upper molars of small size. Phylogenetic analysis revealed it as sister taxon of the clade comprising Laolestes, Krebsotherium, Dryolestes, and Guimarotodus. A dryolestid mandible with unevenly rooted molars and extremely worn down teeth cannot be attributed to Minutolestes submersus gen. et sp. nov. due to possessing molars twice as large in size. The mandible is assigned to a new dryolestid taxon, Beckumia sinemeckelia gen. et sp. nov., and has the dental formula 3i, 1c, 4p, 8m and a fully reduced Meckel’s groove. The mandible lacks any trace of a coronoid or splenial. In the phylogenetic analysis, it appears as sister taxon of a clade comprising Achyrodon, Phascolestes, Crusafontia, and Hercynodon. The new mammals are the stratigraphically youngest European representatives of their clades. The late survival of Beckumia sinemeckelia gen. et sp. nov. and Minutolestes submersus gen. et sp. nov. is possibly the result of isolated evolution in an Early Cretaceous island environment. This finding of new spalacotheriid and dryolestid mammals from Central Europe adds to an emerging paleobiogeographic pattern that Europe was distinct from Asia in the constituents of mammalian faunas during the Barremian–Aptian.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 155-175
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 23.

Tytuł:

Systematics and paleobiology of Carnivora and Hyaenodonta from the lower Miocene of Buluk, Kenya

Autorzy:

Morlo, M.
Friscia, A.
Miller, E.R.
Locke, E.
Nengo, I.

Powiązania:

https://bibliotekanauki.pl/articles/2082322.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Carnivora
Amphicyonidae
Hyainailouridae
Viverridae
guild structure
Miocene
Kenya

Opis:

Early Miocene carnivorous mammals from Buluk, Kenya, are described and discussed. Four taxa belonging to Hyaenodonta and four belonging to Carnivora are identified. Members of Hyaenodonta include Hyainailouros sulzeri, Hyainailouros cf. napakensis, a third taxon about the size of Leakitherium, represented only by postcranial material, and a fourth taxon represented by an edentulous jaw, in the size range of Sectisodon. Members of Carnivora include a new species of Cynelos jitu, which represents the largest species of Cynelos known. The first m2 of Cynelos macrodon is described, and the differentiation of this species from Cynelos ginsburgi and Cynelos peignei is confirmed. A third carnivoran species is represented by a mandibular fragment attributed to a viverrid similar to Mioprionodon, and a fourth taxon is represented by a feliform distal humerus, the size of that of a small cat. An ecomorphological guild structure analysis reveals that the Buluk carnivore have estimated body sizes spanning from <1 kg to >100 kg. Three very large species (>100 kg), and another two in the 30–100 kg range are present, while only two taxa are present in the 3–10 kg category. Carnivores in the 1–3 kg and the 10–30 kg categories are absent. Locomotor pattern could be obtained for only four taxa, and all are characterized by terrestrial locomotion. A minimum of three dietary classes (insectivorous, carnivorous, scavenging) are represented. The co-occurrence of multiple very large carnivores is not uncommon in early Miocene faunas, but the taphonomy of Buluk may also contribute to the favored preservation of larger and terrestrially adapted animals.

Źródło:

Acta Palaeontologica Polonica; 2021, 66, 2; 465-484
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 24.

Tytuł:

Docodonts from the British Mesozoic

Autorzy:

Sigogneau-Russell, D

Powiązania:

https://bibliotekanauki.pl/articles/22512.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mesozoic
Great Britain
docodont
Docodonta
Mammalia
Berriasian
Bathonian
paleontology

Opis:

This paper deals with new docodont teeth from the upper Bathonian of Forest Marble, collected by Prof. K.A. Kermack and his team, and from the basal Cretaceous of the Purbeck Limestone Group, collected by P. Ensom. Study of this materialled to the recognition of three new taxa: Borealestes mussettisp. nov. and Krusatodon kirtlingtonensis gen. et sp. nov. from Forest Marble, Peraiocynodon majorsp. nov. from Purbeck; this makes the Bathonian locality the richest (four species) docodont locality so far known. The possible synonymy of Cyrtlatherium–Simpsonodon (Forest Marble) and of Peraiocynodon–Docodon (Purbeck−Morrison) suggested by several authors is discussed. In conclusion, phyletic relationships between the known docodont genera are proposed, based on lower molars.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 25.

Tytuł:

New systematic insights about Plio-Pleistocene moles from Poland

Autorzy:

Sansalone, G.
Kotsakis, T.
Piras, P.

Powiązania:

https://bibliotekanauki.pl/articles/22765.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Talpidae
Neurotrichus
systematics
taxonomy
Pliocene
Pleistocene
mole
Polska

Opis:

The generic attribution of the Plio-Pleistocene Polish moles ?Neurotrichus polonicus and ?Neurotrichus skoczeni has been questioned several times in the past. The fossil material belonging to ?Neurotrichus polonicus and ?Neurotrichus skoczeni is re-evaluated here and a new diagnosis is provided on the basis of qualitative considerations. In addition, a Geometric Morphometric analysis of the humerus has been performed including both extant and extinct Neurotrichini and Urotrichini taxa for comparison. Our results proved the unique morphology of the Polish material suggesting a distinct taxonomic state. The morphological variations evidenced by the humeral shape analysis agree with the observed qualitative differences and support a new generic allocation. The new genus Rzebikia gen. nov. is proposed for all the material previoulsly ascribed to ?Neurotrichus polonicus and ?Neurotrichus skoczeni.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 26.

Tytuł:

A eutherian mammal in the latest Cretaceous of Vitrolles, Southern France

Autorzy:

Tabuce, R
Vianey-Liaud, M.
Garcia, G.

Powiązania:

https://bibliotekanauki.pl/articles/22800.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

eutherian mammal
Eutheria
mammal
Cretaceous
Mammalia
Vitrolles
France
paleontology

Opis:

In Europe, the fossil record of the eutherian mammals is very scanty for the Late Cretaceous, as only two genera, documented by isolated teeth, are presently recorded in France and in Spain. Both genera, Labes and Lainodon, are considered to be representatives of the “zhelestids”, a paraphyletic unit regarded as being at the origin of Cenozoic ungulates within the Ungulatomorpha clade. We here describe Valentinella vitrollense gen. et sp. nov. from Vitrolles la Plaine (Maastrichtian, southern France). This species, represented by fragmentary remains of lower and upper dentitions, is tentatively assigned to the “zhelestids” according to the hypoconulid−entoconid twinning and the antero−posteriorly short trigonid on m1–3. The occlusal surfaces are obliterated by dental attrition, but Valentinella could be an evolved “zhelestid”, more derived than Labes and Lainodon by its fully compressed trigonid. Valentinella is similar to Gallolestes by other derived characters such as a crushing specialization of the teeth, associated with a probably molariform p4 (or dp4) and slightly reduced m3. The enamel microstructure, showing a radial prismatic pattern combined with a reduced interprismatic matrix, in which cristallites are oriented at about 45° to the prisms axes, appears compatible with the ancestral morphotype for all ungulates; although no synapomorphy can be proposed for the ungulatomorphs.

Źródło:

Acta Palaeontologica Polonica; 2004, 49, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 27.

Tytuł:

New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications

Autorzy:

DEL PINO, SANTIAGO HERNÁNDEZ
SEOANE, FEDERICO D.
CERDEÑO, ESPERANZA

Powiązania:

https://bibliotekanauki.pl/articles/945282.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
toxodontidae
leontiniidae
homalodotheriidae
postcranium
deseadan age
argentina
mendoza

Opis:

During the last decade, the Deseadan (late Oligocene) Quebrada Fiera locality, Mendoza Province, Argentina, has provided a large amount of mammal remains. Taxonomic studies have shown the presence of faunal elements common with other Deseadan associations from Patagonia and lower latitudes (Salla, Bolivia), as well as endemic taxa of different groups of mammals (Notohippidae, Leontiniidae, Homalodotheriidae, Hegetotheriidae, and Metatheria) and even a gastropod. In this work, we present a taxonomic and phylogenetic analysis of a set of postcranial fossils of three families of the suborder Toxodontia (Notoungulata). The postcranial elements are assigned to taxa previously recognized at Quebrada Fiera, such as the leontiniid Gualta cuyana and the homalodotheriid Asmodeus petrasnerus, but also to the family Toxodontidae that is represented by Proadinotherium sp. and another larger toxodontid; a few dental remains of Proadinotherium are also included as this is the first time that toxodontids from Quebrada Fiera are described. In the case of A. petrasnerus, an almost complete calcaneum allows us to expand the diagnosis of this taxon. The bones assigned to G. cuyana enlarge the anatomical knowledge of this species. In turn, the presence of the genus Proadinotherium extends its geographic distribution in Argentina and adds to the extra-Patagonian record of P. saltoni from Salla, Bolivia. Phylogenetic results do not differ much from previous analyses using postcranial characters, and the obtained consensus trees show low node supports. The various phylogenetic analyses performed here provide a more robust framework to interpret the relationships of the studied taxa.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 1; 195-210
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 28.

Tytuł:

The Eocene South American metatherian Zeusdelphys complicatus is not a protodidelphid but a hatcheriform: paleobiogeographic implications

Autorzy:

CARNEIRO, LEONARDO M.
OLIVEIRA, ÉDISON VICENTE

Powiązania:

https://bibliotekanauki.pl/articles/945640.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
metatheria
hatcheriformes
zeusdelphys
paleobiogeography
systematics
eocene
itaboraí
basin

Opis:

Zeusdelphys complicatus is one of the most enigmatic metatherians from the Itaboraí Basin. The type and only known specimen was previously regarded as the upper dentition of Eobrasilia; an M4 of a new taxon; an M3 of a Kollpaniidae (now regarded as a group of “condylarths”); a probable M1 of an incertae sedis taxon; and as an M1 of a Protodidelphidae. Herein, we present a morphological review of the dental structures of Zeusdelphys complicatus, presenting new interpretations and comparing it with other North and South American taxa. We also perform a phylogenetic analysis in order to test the affinities of Zeusdelphys and the validity of most studied characters. The results recovered Zeusdelphys complicatus as more closely related to Hatcheritherium alpha than to any other metatherian. Glasbiidae were recovered as the sister lineage of Protodidelphidae within Didelphimorphia, as true marsupials. Ectocentrocristus was recovered as the sister taxon of Zeusdelphys + Hatcheritherium, as a Hatcheriformes. The analysis recovered this suborder as an independent lineage from Polydolopimorphia, being more closely related to “Alphadontidae”. The affinities with Protodidelphidae are a result of convergent evolution, as Zeusdelphys is more closely related to Hatcheritherium alpha from the Late Cretaceous of North America. The results support a North American origin for Hatcheriformes. The presence of strong sea-level lowstands and islands in the Caribbean Plate during the Late Cretaceous provide valid data to support a faunal interchange between Americas during the latest Late Cretaceous. Based on the results, Zeusdelphys represents a South American early Eocene surviving Hatcheriformes.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 3; 497-507
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 29.

Tytuł:

Highly derived eutherian mammals from the earliest Cretaceous of southern Britain

Autorzy:

SWEETMAN, STEVEN C.
SMITH, GRANT
MARTILL, DAVID M.

Powiązania:

https://bibliotekanauki.pl/articles/945956.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
eutheria
dentition
early cretaceous
purbeck group
britain
uk

Opis:

Eutherian mammals (Placentalia and all mammals phylogenetically closer to placentals than to marsupials) comprise the vast majority of extant Mammalia. Among these there is a phenomenal range of forms and sizes, but the origins of crown group placentals are obscure. They lie within the generally tiny mammals of the Mesozoic, represented for the most part by isolated teeth and jaws, and there is strongly conflicting evidence from phenomic and molecular data as to the date of origin of both Eutheria and Placentalia. The oldest purported eutherians are Juramaia from the Upper Jurassic of China, and Eomaia and Acristatherium from the Lower Cretaceous, also of China. Based on dental characters and analyses of other morphological and molecular data, doubt has recently been cast on the eutherian affinities of the Chinese taxa and consequently on the date of emergence of Eutheria. Until now, the only tribosphenic mammal recorded from the earliest Cretaceous (Berriasian) Purbeck Group of Britain was the stem tribosphenidan Tribactonodon. Here we document two new tribosphenic mammals from the Purbeck Group, Durlstotherium gen. nov. and Durlstodon gen. nov., showing highly derived eutherian molar characters that support the early emergence of this clade, prior to the Cretaceous.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 4; 657-665
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 30.

Tytuł:

Estimating body mass from the astragalus in mammals

Autorzy:

Tsubamoto, T.

Powiązania:

https://bibliotekanauki.pl/articles/946014.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
astragalus
talus
regression analysis
body mass estimate
paleogene

Opis:

Astragalar fossils have been intensively studied as an indicator of the functional morphology and phylogenetic relation-ships of mammals. However, relatively few studies have investigated the relationship between astragalar size and body mass, usually with a focus on a particular taxonomic group. Here, univariate and multiple regression models are used to analyze the relationship between astragalar size and body mass based on an extensive sample of extant land mammals (11 orders, 48 species, 80 individuals; body mass ranging from 18 g to 3.4 t). The analyses revealed the size of the tibial trochlea to be a better predictor of body mass than the total size of the astragalus. Based on these results, estimates of the body mass of several Paleogene land mammals were calculated and compared to those of previous studies. Thus, for ex-ample, the body mass of “Baluchitherium”, the largest terrestrial mammal known to date, was estimated at about 10–15 t.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 2; 259-265
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 31.

Tytuł:

Ungulates of the middle Miocene Monarch Mill Formation, Churchill County, Nevada, USA

Autorzy:

Smith, Kent S.
Czaplewski, Nicholas J.
Coombs, Margery C.

Powiązania:

https://bibliotekanauki.pl/articles/2216224.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Ungulata
palaeoclimate
Barstovian
Miocene
Middlegate Basin
Nevada
paleoecology

Opis:

A middle Miocene, early Barstovian land mammal age vertebrate assemblage, the Eastgate local fauna (LF), is known in the basal-most part of the Monarch Mill Formation. This rich assemblage of fossil vertebrates occurs within the Middlegate Basin in Churchill County, Nevada, USA. The Eastgate LF includes the fossil remains of fish, amphibians, reptiles, birds, and over 25 families of mammals. Previous studies on the mammalian remains have revealed several endemic taxa of rodents and carnivores. Herein, we describe the ungulates, which include two taxa from two families of Artiodactyla (Ticholeptus sp., Merycoidodontidae and Barbouromeryx trigonocorneus, Palaeomerycidae) and three taxa from three families of Perissodactyla (Equidae gen. et sp. indet., Moropus merriami, Chalicotheriidae, and Teleoceras sp., Rhinocerotidae). Independent paleobotanical evidence nearly contemporaneous with the vertebrates indicates forest and shrubland paleovegetation, and suggests that the area had been uplifted to 2700–2800 m paleoaltitude. Therefore, this local fauna adds a rare glimpse of a medium-to high-altitude vertebrate community in the intermountain western interior of North America. Temporally-restricted taxa (especially the rodent Tardontia nevadans and chalicothere Moropus merriami) reinforce the early Barstovian age of the Eastgate LF and are consistent with tephrochronological dates and radiometric analyses. The presence of Barbouromeryx trigonocorneus at Eastgate is significant in that its occurrence potentially represents a temporal range extension into the early Barstovian (previously known from latest Arikareean to middle Hemingfordian), and extends the paleobiogeographic range from the Great Plains to the Great Basin. Unequivocally, the ungulates and other mammals of the Eastgate LF support the presence of a temperate forest ecosystem in the Great Basin just subsequent to the Miocene Climatic Optimum.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 239-256
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 32.

Tytuł:

Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina

Autorzy:

Armella, M.A.
Garcia-Lopez, D.A.
Babot, M.J.
Deraco, V.
Herrera, C.M.
Saade, L.
Bertelli, S.

Powiązania:

https://bibliotekanauki.pl/articles/2082173.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Notoungulata
calcaneum
astragalus
plantigrade
foot stances
Paleogene
South America

Opis:

Notoungulates represent the most taxonomically diverse and temporally and geographically widespread group among South American native ungulates. Here, we analyze anatomical and systematic aspects of proximal tarsal bones recovered from the Lower and Upper Lumbrera formations (middle and late middle Eocene) in northwestern Argentina. We provide detailed descriptions, comparisons, and infer foot stances and range of movements for the taxa implicated. Material studied includes astragali belonging to the oldfieldthomasiid Colbertia lumbrerense (Lower Lumbrera Formation), a set of proximal tarsals referred as Typotheria indet. (Lower Lumbrera Formation), and tarsals (also including navicular and cuboid) of the informal taxon “Campanorco inauguralis” (Upper Lumbrera Formation). The comparison of the tarsals of Colbertia lumbrerense (middle Eocene of Argentina) with Colbertia magellanica (early Eocene of Brazil) reveals several differences including variations on the development and arrangement of articular facets, and the size of the dorsal astragalar foramen in the Argentinean species. The specimen of Typotheria indet. shows morphological affinities with basal interatheriid taxa. However, its larger size contrasting with the overall small body sizes of Eocene interatheriids precludes an indisputable taxonomic assignment. Concerning “Campanorco inauguralis”, our observations indicate that there is no morphological evidence for a close phylogenetic relationship with Mesotheriidae. It presents a “reversed alternating tarsus” condition, which is also observed in Leontiniidae, “Notohippidae”, Toxodontidae, and some typotherians. However, the spectrum of singularities exhibited by this form precludes the assessment of its relationships in the context of the Paleogene radiation of Typotheria and it is necessary to extend the comparison to Eocene notoungulates. Finally, in a morphofunctional context a plantigrade foot posture is inferred for the specimens here reported. These observations have the potential to provide functional proxies for paleoecological reconstructions to be applied to the study of the early radiation of these notoungulate faunas.

Źródło:

Acta Palaeontologica Polonica; 2020, 65, 2; 1-17
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 33.

Tytuł:

Drobne ssaki północnej części Puszczy Kozienickiej na podstawie analizy diety puszczyka Strix aluco
Small mammals of the northern part of the Kozienice Forest based on the analysis of the tawny owl Strix aluco diet

Autorzy:

Lesiński, G.
Wojtowicz, B.

Powiązania:

https://bibliotekanauki.pl/articles/2090092.pdf

Data publikacji:

2021

Wydawca:

Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne

Tematy:

Mammalia
species composition
owl pellets
woodland
Glis glis
central Poland

Opis:

The analysis of the composition of the Tawny Owl pellets collected at a study site (Stary Chinów, 51o37’N, 21o28’E) in the northern part of the Kozienice Forest in 2019-2021 documented 18 species of small mammals. They represented three orders: Soricomorpha (4), Chiroptera (3), and Rodentia (11). The community of small mammals in the study area was relatively rich. The most frequently noted species were: Sorex araneus, Clethrionomys glareolus, Microtus agrestis and Apodemus flavicollis. The populations of rodents of the family Gliridae (Muscardinus avellanarius, Glis glis) and Microtus agrestis living on the study site are relatively abundant as compared to other areas of central Poland.

Źródło:

Kulon; 2021, 26; 69-75
1427-3098

Pojawia się w:

Kulon

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 34.

Tytuł:

A new Beneziphius beaked whale from the ocean floor off Galicia, Spain and biostratigraphic reassessment of the type species

Autorzy:

MIJÁN, ISMAEL
LOUWYE, STEPHEN
LAMBERT, OLIVIER

Powiązania:

https://bibliotekanauki.pl/articles/945284.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
cetacea
ziphiidae
miocene
north atlantic
north sea
iberian peninsula

Opis:

Although the fossil record of beaked whales (Cetacea, Odontoceti, Ziphiidae) is continuously improving, the geological age of new taxa is often poorly constrained. Based on a partial cranium from deep seafloor deposits off Galicia, Spain, we describe a new species of the stem beaked whale genus Beneziphius, B. cetariensis sp. nov. The latter differs from the type species B. brevirostris in the larger size, the rostrum being proportionally longer, the premaxillae being longer than the maxillae at the apex of the rostrum, the left premaxillary sac fossa being transversely concave, and the ascending process of the premaxilla reaching the vertical. Considering that the stratigraphic context of deep-sea deposits off the Iberian Peninsula is not precisely known, we provisionally propose an extended, middle Miocene to early Pliocene interval for the geological age of B. cetariensis. Nonetheless, the palynological analysis of sediment sampled from cavities in the cranium of the holotype of B. brevirostris, discovered during the second part of the nineteenth century in inland deposits of Antwerp (north of Belgium), yield an early to mid-Serravallian age (13.2–12.8 Ma, late middle Miocene). B. brevirostris is thus the oldest described species of the “Messapicetus clade”, a large clade of stem ziphiids in which most species are dated from the late Miocene. The description of the Galician species B. cetariensis broadens the biogeographic distribution of Beneziphius and confirms the strong ziphiid faunal affinities between the eastern coast of the North Atlantic and the southern margin of the North Sea Basin.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 1; 211-220
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 35.

Tytuł:

Taxonomic, biogeographic, and taphonomic reassessment of a large extinct species of paca from the Quaternary of Brazil

Autorzy:

MAYER, ELVER LUIZ
HUBBE, ALEX
KERBER, LEONARDO
HADDAD-MARTIM, PAULO MIGUEL
NEVES, WALTER

Powiązania:

https://bibliotekanauki.pl/articles/945459.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
rodentia
caviomorpha
cuniculidae
cave environments
karst
pleistocene
lagoa santa

Opis:

The taxonomy of extinct species of Cuniculus (Caviomorpha, Rodentia, Mammalia) is confusing and poorly studied. Here we provide a taxonomic review of extinct cuniculids, and discuss the taxonomic, biogeographic, taphonomic and chronologic aspects of new remains of an extinct large cuniculid from Brazilian Quaternary Gruta Cuvieri cave deposits. Our taxonomic review suggests that Cuniculus rugiceps (Lund, 1837) is the valid taxon to include all available occurrences of extinct cuniculids. The most evident features of this taxon are its larger size and the stronger and more densely distributed rugosities on the skull external surface when compared to the extant species. At present, the distribution of C. rugiceps is restricted to the tropical region of Brazil. Regarding the new remains, taphonomic analysis of the specimens from Cuvieri Cave suggests our sample is represented by at least seven individuals that accumulated within the cave deposit by pitfall entrapment. The biostratinomy of the specimens was characterized by prolonged surface exposure inside the pit with fragmentation and displacement caused mostly by falling and subsequent trampling by individuals of the same and/or other species. The stratigraphically controlled excavations and chronological data allowed the establishment of a Late Pleistocene minimum age for these specimens.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 4; 743-758
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 36.

Tytuł:

Out of the Pacific: A second fossil porpoise from the Pliocene of the North Sea Basin

Autorzy:

Colpaert, W.
Bosselaers, M.
Lambert, O.

Powiązania:

https://bibliotekanauki.pl/articles/945604.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Cetacea
Odontoceti
Phocoenidae
Pliocene
Belgium
fossil
North Sea Basin

Opis:

Although modern porpoises (Phocoenidae, Odontoceti, Cetacea) occupy most oceanic regions of the world, their fossil record outside the Pacific Ocean remains extremely scarce. Based on a partial skull from lower Pliocene layers (Kattendijk Formation, Zanclean, 5–4.4 Ma) of the Antwerp harbour, a new genus and species of fossil phocoenid, Brabocetus gigaseorum gen. et sp. nov., is described. The new taxon is diagnosed by a unique combination of characters including an anterolateraly widely-open antorbital notch, the anteromedial sulcus being shorter than the posteromedial sulcus, the frontal boss being longer than wide, pronounced asymmetry of the vertex, and the possible presence of an additional longitudinal sulcus across the premaxillary eminence. The phylogenetic analysis indicates that B. gigaseorum is not closely related to extant phocoenids; it is included in a clade comprising most north-west Pacific fossil species, two north-east Pacific fossil species, and the only previously described North Sea fossil species Septemtriocetus bosselaersi. Considering the paleobiogeographic distribution of phocoenids, an early Pliocene arrival from the North Pacific to the North Sea may be correlated to the early opening of the Bering Strait and migration via the Arctic. The presence of S. bosselaersi in younger deposits (Piacenzian) of the southern margin of the North Sea Basin could be the result of either a second dispersal event, or of local speciation in the North Sea, whereas an additional trans-Arctic migration from the North Pacific lead to the present occupation of the North Atlantic and North Sea by the phylogenetically distantly related harbor porpoise Phocoena phocoena.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 1-10
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 37.

Tytuł:

Diversity of cingulate xenarthrans in the middle–late Eocene of Northwestern Argentina

Autorzy:

CIANCIO, MARTÍN R.
HERRERA, CLAUDIA
ARAMAYO, ALEJANDRO
PAYROLA, PATRICIO
BABOT, JUDITH

Powiązania:

https://bibliotekanauki.pl/articles/945707.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
cingulata
dasypodidae
palaeogene
eocene
south america
central andean puna

Opis:

The study of Paleogene mammals of intermediate and low latitudes has increased in the last decades and has been clearly demonstrated their importance in the comprehension of the evolution and faunistic changes outside Patagonia. The study of these faunas permits establishing new comparisons among contemporaneous faunistic associations, completing the distributional patterns, and evaluating evolutionary changes in the lineages in relation to climatic conditions prevailing in each of the different regions. In this work we study the diversity of Dasypodidae recovered from the Geste Formation (Northwestern Argentina). Bearing levels of Geste Formation were referred alternatively to a Barrancan subage of Casamayoran SALMA (middle Eocene, Lutetian–Bartonian) or a Mustersan SALMA (middle–late Eocene, Bartonian–Priabonian) on faunistic comparations with their equivalent in Patagonia, although absolute isotopic data indicates ca. 37–35 Ma (late Eocene, Priabonian). We described the following taxa of Dasypodidae: (i) Dasypodinae Astegotheriini: cf. Astegotherium sp., ?Prostegotherium sp., Parastegosimpsonia cf. P. peruana; (ii) Dasypodinae indet.; (iii) Euphractinae Euphractini: Parutaetus punaensis sp. nov.; (iv) Dasypodidae incertae sedis: Pucatherium parvum, Punatherium catamarcensis gen. et sp. nov. In comparison with other beds bearing Eocene cingulate faunas from Northwestern Argentina, Geste Formation presents the greatest diversity of dasypodids. This association is consistent with a late Eocene age and shows a taxonomic and biogeographic relevant features given by a unique specific composition: (i) it differs from that known for contemporaneous faunas from Southern latitudes and younger associations from more tropical areas; (ii) it includes genera with close affinities to those distant areas; (iii) it presents unique taxa typical from Eocene units exposed at Northwestern Argentina. This highlights the evolutionary and biogeographic meaning of the cingulate of the Geste Formation and supports the idea that the faunistic regionalization probably obeyed to latitudinal than to temporal factors.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 3; 575-590
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 38.

Tytuł:

Constraints on the Lamina Density of Laminar Bone Architecture of Large-Bodied Dinosaurs and Mammals

Autorzy:

Hofmann, R.
Stein, K.
Sender, P.M.

Powiązania:

https://bibliotekanauki.pl/articles/946035.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

dinosauria
mammalia
bone histology
laminar bone
lamina thickness
lamina density

Opis:

Laminar bone tissue is commonly found in Dinosauria (including birds) and Mammalia. The tissue emerged convergently several times, and its frequent occurrence among amniotes has stimulated researchers to study some of its geometric features. One such feature is lamina thickness or lamina density (LD, expressed as number of laminae per mm). We measured LD in a sample of sauropodomorph dinosaur taxa (basal sauropodomorphs, basal sauropods and Neosauropoda) and compared it with LD of a selection of mammals. LD is relatively constrained within the groups; nonetheless mean sauropodomorph LD differs significantly from mean mammal LD. However, increasing sample size with other dinosaur groups and more perissodactyls and artiodactyls may alter this result. Among sauropods, LD does not change drastically with increasing femur length although a slight tendency to decrease may be perceived. We conclude that the laminar vascular architecture is most likely determined by a combination of structural and functional as well as vascular supply and physiological causes.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 2; 287-294
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 39.

Tytuł:

Globicephaline whales from the Mio-Pliocene Purisima Formation of central California, USA

Autorzy:

Boessenecker, R.W.
Perry, F.A.
Geisler, J.H.

Powiązania:

https://bibliotekanauki.pl/articles/945570.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Cetacea
Odontoceti
Delphinidae
Globicephalinae
paleontology
Pliocene
Purisima Formation
California
USA

Opis:

Oceanic dolphins (Odontoceti: Delphinidae) constitute the most speciose family of extant cetaceans, yet their fossil record is limited. Although several extinct species are known from Mediterranean and North Atlantic localities, there are few examples from deposits along the Pacific Rim. Despite the rich record of successive marine mammal fossil assemblages in the extensively sampled eastern North Pacific, only one fossil delphinid, Protoglobicephala (Pliocene, Baja California), has been described. We report globicephaline remains from the Mio-Pliocene Purisima Formation of Northern California, including a partial cranium and two isolated petrosals. The skull exhibits large ridges on the premaxillae, and cannot be referred to any extant globicephaline genus. Similarly, the petrosals cannot be referred to any described delphinid genus, although they are most similar to those of Globicephala. Linear regression analyses demonstrate that promontorium length and bony nares width scale significantly within delphinidans, and provide a new method for testing referrals of isolated fossil odontocete petrosals to taxa known only by crania. Applying this method to the new globicephalines from the Purisima Formation, we find the petrosals to be too small to represent the same taxon as the skull, thus indicating the presence of two separate species. Our results demonstrate that globicephalines had achieved a worldwide distribution by the early Pliocene, suggesting diversification of the subfamily by 5 Ma.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 113-122
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 40.

Tytuł:

A new Miocene sirenian from Kutch, India

Autorzy:

Thewissen, J G M
Bajpai, S.

Powiązania:

https://bibliotekanauki.pl/articles/22608.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Miocene
new species
Sirenia
paleontology
sirenian
India
Domningia
Kutch District
Mammalia

Opis:

We report a new Miocene sirenian from District Kutch, State of Gujarat, India: Domingia sodhae gen. et sp. nov. The new species is a dugongine dugongid with flattened tusk−like upper incisors. Like some other Miocene dugongids, Domningia is large and has complex, bilophodont molars and three−rooted premolars, which are strongly worn. The rostrum is downturned significantly, similar to modern dugongs, and indicative of a specialized feeding mode. Phylogenetically, it is closely related to Dioplotherium, Rytiodus, Corystosiren, and Bharatisiren. Among these, Domningia is most similar to Bharatisiren indica and Dioplotherium manigaulti, in that all three taxa retain multi−rooted premolars. Similar to Bharatisiren, the nasal process of the premaxilla is long. Bharatisiren and Domningia are part of a late Oligocene and early Miocene radiation of dugongines in South Asia.

Źródło:

Acta Palaeontologica Polonica; 2009, 54, 1; 7-13
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 41.

Tytuł:

Stagodontid marsupials from the Late Cretaceous of Canada and their systematic and functional implications

Autorzy:

Fox, R C
Naylor, B.G.

Powiązania:

https://bibliotekanauki.pl/articles/23125.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Canada
Cretaceous
Late Cretaceous
Stagodontidae
Mammalia
stagodontid mursupial
Alberta
Marsupialia
paleontology

Opis:

Previously undescribed specimens of stagodontid marsupials from Late Cretaceous deposits in Alberta, Canada, reveal new information concerning the upper dentition of Eodelphisspp. and the lower dentition of Didelphodon coyi. Additionally, an incomplete upper dentition of D. coyi from the Scollard Formation extends the range of this species into the Lancian, co−eval with D. vorax and D. padanicus. Stagodontids are in accord with other North American Late Cretaceous marsupials for which the appropriate parts are known in lacking diastemata between the canines and the molars while possessing well−developed palatal vacuities, implying that these morphologies characterized ancestral marsupials. If so, the diastema between P1 and P2 in the Asian middle Early Cretaceous “metatherian” Sinodelphys szalayi is convergent on that in Cenozoic didelphids, and the absence of palatal vacuities in South American Paleogene and Neogene borhyaenids is derived, representing a paedomorphic truncation of development. Claims that the Asian Late Cretaceous “metatherian” Deltatheridium pretrituberculare had a marsupial−like dental replacement pattern are tautological, deduced from an a priori acceptance of a marsupial model of replacement to the exclusion of other, no less realistic, alternatives. The new specimens of Didelphodon coyi demonstrate that upper and lower premolars occluded broadly, implying that the inflated lingual lobes characteristic of Didelphodon premolars evolved primarily as a crushing mechanism, not for passive protection of the gums. Recent speculations that stagodontids were aquatic are not based on credible morphologic or taphonomic evidence and are dismissed, as is speculation that the Judithian species of Eodelphis are sexual morphs of a single species. Current knowledge of Didelphodon compels correction of numerous errors concerning its morphology as presented in recent analyses of marsupial relationships.

Źródło:

Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 42.

Tytuł:

The first possible remingtonocetid stem whale from North America

Autorzy:

Uhen, M.D.
Peredo, C.M.

Powiązania:

https://bibliotekanauki.pl/articles/2082285.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Archaeocete
Remingtonocetidae
middle Eocene
Castle Hayne Formation
North Carolina
USA

Opis:

Remingtonocetid cetaceans are a group of stem whales known from the Indo-Pakistan and North African Tethys Ocean. An unusual tooth was discovered by Peter J. Harmatuk in 1973 in the middle Eocene Superior Stone Quarry (now the Martin Marietta Quarry) near Castle Hayne, North Carolina, USA. Here we identify this tooth as a premolar of a possible member of the Remingtonocetidae, which would extend the range of this family across the Atlantic to eastern North America. This partial tooth includes most of the crown (missing the mesial end) and the posterior root. The tooth bears a single central cusp and a worn accessory cusp on the posterior end. This tooth most closely resembles premolars of Remingtonocetus and is rather dissimilar to premolars of other archaeocetes known from the middle Eocene of North America, such as the families Protocetidae and Basilosauridae. This new record potentially expands the geographic distribution of the amphibious cetacean family Remingtonocetidae across the Atlantic.

Źródło:

Acta Palaeontologica Polonica; 2021, 66, 1; 77-83
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 43.

Tytuł:

Ecomorphology of radii in Canidae: Application to fragmentary fossils from Plio-Pleistocene hominin assemblages

Autorzy:

Meloro, C.
Louys, J.

Powiązania:

https://bibliotekanauki.pl/articles/21545.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Canidae
Canis
habitat adaptation
paleoenvironment
predation
Plio-Pleistocene
fossil
Kenya

Opis:

Fragmentary long bone material from fossil Carnivora is rarely considered to support palaeoenvironmental reconstructions. Here, we use morphometry of the radius in extant carnivorans of the dog family (Canidae) to reconstruct the palaeobiology of extinct canids from Olduvai Gorge, Tanzania (Bed I and II) and Koobi Fora, Kenya. We use radius mor-phometrics to predict adaptation to prey size and introduce a new method for quantifying canid habitat adaptations based on the geographic distributions of the extant species sampled. Linear Discriminant Function Analyses (DFA) and cluster neighbour-joining algorithms are employed to investigate radial morphometrics as described by 29 linear measurements. Results of our analyses suggest that a phylogenetic signal is present in radial morphometrics, even if it does not allow us to accurately discriminate among genera. A binary prey size categorisation of "small-medium" versus "large" prey can be more accurately predicted than a habitat categorisation scheme (Open, Mixed, Closed). The East African fossil specimens examined show morphometric affinities with the golden jackal (Canis aureus) and coyote (Canis latrans) and are likely attributable to the genus Canis. Fragmentary fossil specimens from Olduvai Gorge are predicted as habitat generalists (Open for Bed I and Mixed for Bed II) adapted for hunting small-medium prey, whereas the specimen from Koobi Fora was predicted as inhabiting mixed habitats and adapted for killing large prey. This study supports the inclusion of fossil Canidae in palaeoecological analyses attempting to clarify the palaeoenvironment of early hominin fossil sites.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 44.

Tytuł:

Femur of a morganucodontid mammal from the Middle Jurassic of Central Russia

Autorzy:

Gambaryan, P P
Averianov, A.O.

Powiązania:

https://bibliotekanauki.pl/articles/23231.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Morganucodontidae
Middle Jurassic
mammal
anatomy
Mammalia
morganucodontid
Russia
femur
Jurassic
locomotion

Opis:

We describe a nearly complete mammalian femur from the Middle Jurassic (upper Bathonian) from Peski quarry, situated some 100 km south east of Moscow, central Russia. It is similar to the femora of Morganucodontidae in having a globular femoral head, separated from the greater trochanter and reflected dorsally, fovea capitis present, both trochanters triangular and located on the same plane, distal end flat, mediolaterally expanded, and somewhat bent ventrally, and in the shape and proportions of distal condyles. It is referred to as Morganucodontidae gen. et sp. indet. It is the first representative of this group of mammals in Eastern Europe from the third Mesozoic mammal locality discovered in Russia. Exquisite preservation of the bone surface allowed us to reconstruct partial hind limb musculature. We reconstruct m. iliopsoas as inserting on the ridge, which starts at the lesser trochanter and extends along the medial femoral margin for more than half of the femur length. On this basis we conclude that the mode of locomotion of the Peski morganucodontid was similar to that of modern echidnas. During the propulsive phase the femur did not retract and the step elongation was provided by pronation of the femur.

Źródło:

Acta Palaeontologica Polonica; 2001, 46, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 45.

Tytuł:

Small mammal fauna from Wulanhuxiu (Nei Mongol, China) implies the Irdinmanhan–Sharamurunian (Eocene) faunal turnover

Autorzy:

LI, QIAN
WANG, YUAN-QING
FOSTOWICZ-FRELIK, ŁUCJA

Powiązania:

https://bibliotekanauki.pl/articles/945478.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
rodentia
duplicidentata
anagalidae
eocene
ulan shireh formation
china
erlian basin

Opis:

Wulanhuxiu, a middle Eocene locality in the Erlian Basin, Nei Mongol (China) has been commonly regarded as belonging to the Ulan Shireh Formation, equated with the Irdin Manha Formation. We recognized two separate mammalian faunas of different age from the beds exposed at Wulanhuxiu. The lower fossiliferous horizon contains an anagalid, uncommon duplicidentate representatives (Gomphos progressus sp. nov., Mimolagus, Erenlagus, and Strenulagus), and diverse perissodactyls. This combination of taxa points to an Irdinmanhan age, but one element of the fauna (Schlosseria) may represent an Arshantan relic. Overall, the assemblage comprises “paleoplacental” mammals mixed with “neoplacentals”. The upper horizon is less species-rich and the only paleoplacentals present are scarce creodonts. However, this horizon is marked by abundant remains (including postcranial material) of the lagomorph Gobiolagus and by the presence of an advanced form of Gobiomys (Rodentia), and is most probably Sharamurunian in age. Thus, Wulanhuxiu documents replacement, albeit incomplete, of paleoplacentals by neoplacentals in the Chinese Eocene record.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 4; 759-776
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 46.

Tytuł:

The paleoecology of the Late Miocene mammals from the Optima Local Fauna of Oklahoma, USA

Autorzy:

Frederickson, Joseph A.
Cohen, Joshua E.
Engel, Michael H.
Hunt, Tyler C.
Wilbert, Greg A.
Castaneda, Olga S.
Czaplewski, Nicholas J.

Powiązania:

https://bibliotekanauki.pl/articles/2216233.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
grassland
tooth breakage
Neogene
North America
mesowear
savanna
stable isotopes

Opis:

The Optima Local Fauna represents an important glimpse into the ecological transition between savannah and grassland during the late Miocene (Hemphillian) of what is now the southcentral Great Plains of North America. Though dominated by horses, herbivores from the Optima are morphologically diverse, bearing adaptations for both browsing and grazing lifestyles. Likewise, the carnivorans show similar ranges of size and presumed dietary behavior. In this study, we used carbonate isotope, mesowear, and tooth breakage and wear analyses to investigate the dietary complexity of mammals from a single site collected by the Oklahoma Museum of Natural History. Seventeen taxa were analyzed, including five perissodactyls (Teleoceras hicksi, Dinohippus interpolatus, Neohipparion eurystyle, Nannippus ingenuus, and Astro hippus ansae), four artiodactyls (Texoceros guymonensis, Pediomeryx hemphillensis, Megatylopus matthewi, and Platy gonus sp.), a single proboscidean (Mammut sp.), two rodents (Dipoides indet. and Umbogaulus monodon), and five carni vorans (Agriotherium schneideri, Amphimachairodus coloradensis, Borophagus secundus, Eucyon davisi, Pliotaxi dea cf. nevadensis). Both stable isotope analysis and dental mesowear indicate a broad dietary partitioning occurred among the Optima herbivores, where the artiodactyls were identified as mixed feeders and the perissodactyls were recovered as grazers. In the carnivorans, the large felid Amphimachairodus coloradensis was a hypercarnivore with limited tooth breakage and an enriched δ13C signature, indicating low carcass utilization and a prey preference for horses. The canids had a more generalized diet, with B. secundus showing a greater proportional consumption of carcasses through a higher tooth breakage rate. The large ursid Agriotherium schneideri is here interpreted as an omnivore based on depleted δ13 C values. Overall, we found evidence for a diversity of dietary niches in both carnivores and herbivores during the late Hemphillian in Oklahoma, likely driven by the expansion of grasslands in the region.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 221-238
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 47.

Tytuł:

First record of a chalicothere from the Miocene of Myanmar

Autorzy:

Chavasseau, O.
Chaimanee, Y.
Coster, P.
Emonet, E.-G.
Soe, A.N.
Kyaw, A.A.
Maung, A.
Rugbumrung, M.
Shwe, H.
Jaeger, J.-J.

Powiązania:

https://bibliotekanauki.pl/articles/20027.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

first record
chalicothere
mammal
Mammalia
Perissodactyla
Chalicotheriidae
Chalicotheriinae
Khoratpithecus
paleoenvironment
Miocene
Myanmar

Opis:

Here we describe the first record of a chalicothere from the Miocene of Myanmar. The chalicothere, documented by a partial mandible, was unearthed from the lower portion of the Irrawaddy Formation in the region of Magway, Central Myanmar. The Burmese material belongs to an early late Miocene fauna which recently yielded hominoid remains attributed to Khoratpithecus. The specimen, which is attributed to a chalicotheriine, does not reliably match with any described Miocene Eurasian species of this subfamily, suggesting the possibility it belongs to a new taxon. The discovery of a chalicotheriine in the surroundings of Magway contributes to the hypothesis that closed habitats were an important component of the paleoenvironment of Khoratpithecus.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 48.

Tytuł:

A new Paleocene nyctitheriid insectivore from Inner Mongolia [China] and the origin of Asian nyctitheriids

Autorzy:

Missiaen, P
Smith, T.

Powiązania:

https://bibliotekanauki.pl/articles/21009.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Inner Mongolia
Paleocene
nyctitheriid
China
Mammalia
Subeng
insectivore
Asia
Gashatan
paleontology
Nyctitheriidae

Opis:

Nyctitheriids are primitive insectivores that were relatively abundant and diverse in North America and Europe during the middle Paleocene through to the middle Oligocene. The nyctitheriids from Asia are poorly known and show several distinctive characters. Here we describe the late Paleocene Asionyctia guoi gen. et sp. nov., the first fairly well known Asian nyctitheriid, from the Subeng locality near the city of Erlianhot (Erenhot) in Inner Mongolia, China. Among its most conspicuous features are the paraconid positioned high on p4, the rather primitive morphology and size of p3, the premolariform P4/p4 and the transverse upper molars with a small, straight postcingulum. Except for the paraconid positioned high on p4, these combined features are also present in other Asian nyctitheriids, but absent in North American or European forms. We performed a cladistic analysis, based on a set of 20 dental characters, to resolve higher−level phylogenetic relations within Nyctitheriidae. The strict consensus tree groups all Asian forms in a single clade, for which we propose the rank of a subfamily and the name Asionyctiinae subfam. nov. Within Nyctitheriidae, a semimolariform P4/p4, as in Leptacodon tener, is considered primitive, and we consider the morphologically simplified P4/p4 of Asionyctiinae derived within Nyctitheriidae. Asionyctiinae can be derived from an American, primitive Leptacodon−like ancestor migrating into Asia, with the reduction of P4/p4 occurring on the Asian continent. Considering the derived morphology and the relatively high diversity of Asionyctiinae during the Asian late Paleocene, and the inferred conservative nature of the family Nyctitheriidae, we suggest an early Tiffanian time for the migration of nyctitheriids into Asia.

Źródło:

Acta Palaeontologica Polonica; 2005, 50, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 49.

Tytuł:

First record of a Jurassic mammal [?'Peramura'] from Ethiopia

Autorzy:

Clemens, W A
Goodwin, M.B.
Hutchison, J.H.
Schaff, C.R.
Wood, C.B.
Colbert, M.W.

Powiązania:

https://bibliotekanauki.pl/articles/21748.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Ethiopia
tooth fragment
first record
mammal
Peramura
Mammalia
Jurassic
Mugher Mudstone
paleontology

Opis:

The first record of Mesozoic mammals in Ethiopia is a fragment of a lower mammalian molar discovered in residues left after acid dissociation of a small (ca. 4 kg) geological hand sample of a fine−grained bone bed in the lower part of the Mugher Mudstone exposed in the valley of the Jema River. This bone bed is part of a series of estuarine to fluvial deposits that are thought to be of Late Jurassic (Tithonian) age. The fragment preserves the trigonid of a molar; the distal part of its crown is missing. Morphological characters of the trigonid indicate the specimen (JEM−5/21) documents the presence of a mammal with a dentition at either a derived pretribosphenic or primitive tribosphenic grade of evolution. Absence of a well developed basal cingulid around the mesial end of the crown argues against phylogenetic relationships to the australosphenidans. Loss of the distal portion of the crown removed characters critical for determining its grade of evolution. The working hypothesis that JEM−5/21 represents a “peramuran” is advanced for testing. Hypotheses that it represents a mammal with a more derived grade of molar evolution or a previously unknown group of mammals cannot be excluded. JEM−5/21 establishes the presence of mammals in Ethiopia during the Late Jurassic, and its discovery identifies a fossil locality warranting thorough future exploration.

Źródło:

Acta Palaeontologica Polonica; 2007, 52, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 50.

Tytuł:

Presence of the Asian horse Sinohippus in the Miocene of Europe

Autorzy:

Salesa, M J
Sanchez, I.M.
Morales, J.

Powiązania:

https://bibliotekanauki.pl/articles/22447.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

browser
Anchitheriinae
Asian horse
Miocene
horse
Antchitherium
Mammalia
Europe
Sinohippus
Spain
paleontology

Opis:

The Anchitheriinae are a group of browsing horses with a widespread distribution throughout the Miocene. The subfamily includes the genera Hypohippus, Megahippus, Kalobatippus, Anchitherium, and Sinohippus. In the present paper we compare the remains of a giant anchitherine from the Spanish site of Nombrevilla−1, “Anchitherium” sampelayoi, with other species of Anchitherium from Europe, the North American genera Megahippus and Hypohippus, and the Asian genus Sinohippus. These comparisons allow us to suggest the inclusion of this large Spanish browsing horse in the Asian genus Sinohippus, rather than in Anchitherium. This proposal is made on the basis of some morphological traits from the upper cheek teeth of the Nombrevilla−1 fossils, and their large size, which clearly is outside the range of all other known European Anchitherium.

Źródło:

Acta Palaeontologica Polonica; 2004, 49, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 51.

Tytuł:

Late Cretaceous asioryctitherian eutherian mammals from Uzbekistan and phylogenetic analysis of Asioryctitheria

Autorzy:

Archibald, J D
Averianov, A.O.

Powiązania:

https://bibliotekanauki.pl/articles/23233.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Asioryctitheria
Eutheria
mammal
Late Cretaceous
Cretaceous
Uchkudukodon
Uzbekistan
Daulestes
Mammalia
Bulaklestes
paleontology

Opis:

Four small asioryctitheres at Dzharakuduk (Turonian), Uzbekistan are Daulestes kulbeckensis (= Kumlestes olzha), D. inobservabilis (= Kennalestes? uzbekistanensis), Uchkudukodon (gen. nov.) nessovi and Bulaklestes kezbe. Uchkudukodon nessovi is one of the smallest therians (molars about 1 mm long). Lower canine is two−rooted in Uchkudukodon gen. nov. and Bulaklestes(uncertain in Daulestes). All lower premolars in all four species are double−rooted. Teeth identified as dp1, p2 and dp2 in holotype of Uchkudukodon nessovi (McKenna et al. 2000) are here identified c, p1, and p2. A phylogenetic analysis weakly supported Asioryctitheria by four synapomorphies: conular basins become distinct, the number of roots reverts to two on the lower canine, the p5 becomes longer than p4, and the metaconid on p5 is reduced and lost. Other characters diagnostic of asioryctitheres are four upper and lower premolars (arguably five upper premolars in juvenile Kennalestes), P4 has a protocone swelling or protocone, some asymmetry of the stylar shelf on M1–2, the paraconule on M1–3 is distinctly closer to the protocone than is the metaconule, protocone is of moderate height on M1–3 (70–80% of paracone or metacone height), Meckel’s groove is absent, and the mandibular foramen opens into a smaller depression on lingual side of mandibular ascending ramus. Asioryctes and Ukhaatherium are placed in Asioryctinae and along with Kennalestes are placed in Asioryctidae. Kennalestidae Kielan−Jaworowska, 1981 is a junior subjective synonym for Asioryctidae Kielan−Jaworowska, 1981. Because of uncertainties in the analysis, the positions of Daulestes, Uchkudukodon gen. nov., and Bulaklestes cannot be determined beyond referral to Asioryctitheria.

Źródło:

Acta Palaeontologica Polonica; 2006, 51, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 52.

Tytuł:

New material of the trechnotherian mammal Lactodens from the Early Cretaceous Jehol Biota: Comparison with Origolestes and implications for mammal evolution

Autorzy:

Mao, Fangyuan
Liu, Cunyu
Meng, Jin

Powiązania:

https://bibliotekanauki.pl/articles/2216239.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Symmetrodonta
Spalacotheriidae
Zhangheotheriidae
dental morphology
mandible
Cretaceous
Yixian Formation
middle ear

Opis:

A new specimen of Lactodens sheni, the only known spalacolestine from the Early Cretaceous Jehol Biota, is reported from the Jiufotang Formation, Liaoning, China. The description focuses on the dental and mandibular morphologies from both the new specimen and the holotype, particularly those that were unknown or poorly known from the holotype when the taxon was established. As revealed primarily by high-resolution computed tomography, morphologies and size gradient of the lower molars and detailed features of the mandibles, such as the masseteric foramen, can be unequivo- cally described. The dental and mandibular morphologies of Lactodens are compared with those of Origolestes lii, also from the Jehol Biota; these two taxa represent by far the best specimens in Spalacotheriidae and Zhangheotheriidae, respectively, and could be used as the representatives of their own groups in future higher-level phylogenetic analysis of mammals. The two taxa display considerable differences in dental and mandibular features, probably indicating a deeper split of spalacotheriids and zhangheotheriids than previously thought. Absence of the Meckelian groove in Lactodens, contrasting to the distinct one that holds a sizable Meckel’s cartilage in adult Origolestes, suggests an independent evolution of the definitive mammalian middle ear within “symmetrodontans”. The morphological gradient in the tooth row and association of the upper and lower dentitions from the same individual animal are also instructive for interpreting molar variations and evolution in “symmetrodontans” and mammals.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 135-153
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 53.

Tytuł:

Trichinella spp. (Nematoda) in free-living carnivores (Mammalia: Carnivora) from the Lower Silesia (Poland)

Autorzy:

Piekarska, J.
Gorczykowski, M.
Kicia, M.
Pacon, J.
Soltysiak, Z.
Merta, D.

Powiązania:

https://bibliotekanauki.pl/articles/6261.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

Trichinella
Nematoda
free living animal
carnivore
Mammalia
Carnivora
Lower Silesian region
Polska

Źródło:

Annals of Parasitology; 2016, 62, Suppl.
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 54.

Tytuł:

A new heterosoricid shrew from the lowermost Oligocene of Europe

Autorzy:

Smith, R
Van Den Hoek Ostende, L.W.

Powiązania:

https://bibliotekanauki.pl/articles/21482.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

heterosoricid shrew
shrew
Belgicasorex ramboeri
Mammalia
Oligocene
new species
Europe
Soricomorpha
paleontology

Opis:

The earliest Oligocene faunas of Europe are characterised by a large number of Asian immigrants. One of the classical sites that shows the faunal change after this so−called “Grande Coupure” is Hoogbutsel in Belgium (MP 21). Recently a new locality from the lowermost Oligocene was discovered in Belgium, Boutersem TGV. Here, we describe a new heterosoricid (Mammalia, Soricomorpha), Belgicasorex ramboeri gen. et sp. nov., from these lowermost Oligocene localities. We assume that, like the erinaceid Tetracus nanus Aymard, 1846 and the nyctitheriid Oligonyctia hoffmani Smith, 2004, Belgicasorex ramboeri was one of the Asian immigrants that entered Europe after the “Grande Coupure”.

Źródło:

Acta Palaeontologica Polonica; 2006, 51, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 55.

Tytuł:

Diversity of the adapisoriculid mammals from the early Palaeocene of Hainin, Belgium

Autorzy:

De Bast, E.
Sige, B.
Smith, T.

Powiązania:

https://bibliotekanauki.pl/articles/23133.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

diversity
adapisoriculid mammal
Early Paleocene
Paleocene
Hainin
Belgium
Mammalia
Adapisoriculidae
phylogenesis
paleontology

Opis:

Adapisoriculidae are an enigmatic group of small mammals known from the late Cretaceous of India, and from the early Palaeocene to early Eocene of Europe and Africa. Based on their primitive dental morphology, they have been classified as didelphids, nyctitheriids, leptictids, mixodectids, tupaiids, and palaeoryctids. While the latest hypothesis based on dental morphology suggests an affinity with Lipotyphla, postcranial remains indicate a close relationship with Euarchonta. Here, we present new adapisoriculid dental remains from the early Palaeocene locality of Hainin (Belgium). Adapisoriculidae are particularly abundant in Hainin, where they represent about one third of the mammalian fauna, offering new insights into both their specific and generic phylogenetic interrelationships. We describe three new species (Afrodon gheerbranti sp. nov., Bustylus folieae sp. nov. and Proremiculus lagnauxi gen. et sp. nov.) and document the previously unknown lower dentition of Bustylus marandati. The diversity of dental morphologies observed in the Hainin fauna suggests different interrelationships than previously suggested. In particular, the genus Proremiculus is considered morphologically intermediate between Afrodon and Remiculus, and the latter is no longer recognised as the sister group of Adapisoriculus. Although the highest diversity of adapisoriculids occurs in Europe, the oldest and most primitive members of the family were found in India and Africa, respectively. The geographic origin of the family could thus be located in any of these three continents, depending on the importance attributed to each of these factors. The coexistence of primitive and derived adapisoriculids at Hainin might indicate a very quick diversification in Europe, probably starting around the K−T boundary.

Źródło:

Acta Palaeontologica Polonica; 2012, 57, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 56.

Tytuł:

In quest for a phylogeny of Mesozoic mammals

Autorzy:

Luo, Z X
Kielan-Jaworowska, Z.
Cifelli, R.L.

Powiązania:

https://bibliotekanauki.pl/articles/23509.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Monotremata
phylogenesis
Mesozoic
Boreosphenida
mammal
parsimony analysis
Mammalia
Australosphenida
Allotheria
Eutriconodonta
paleontology

Opis:

We propose a phylogeny of all major groups of Mesozoic mammals based on phylogenetic analyses of 46 taxa and 275 osteological and dental characters, using parsimony methods (Swofford 2000). Mammalia sensu lato (Mammaliaformes of some authors) are monophyletic. Within mammals, Sinoconodon is the most primitive taxon. Sinoconodon, morganucodontids, docodonts, and Hadrocodium lie outside the mammalian crown group (crown therians + Monotremata) and are, successively, more closely related to the crown group. Within the mammalian crown group, we recognize a fundamental division into australosphenidan (Gondwana) and boreosphenidan (Laurasia) clades, possibly with vicariant geographic distributions during the Jurassic and Early Cretaceous. We provide additional derived characters supporting these two ancient clades, and we present two evolutionary hypotheses as to how the molars of early monotremes could have evolved. We consider two alternative placements of allotherians (haramiyids + multituberculates). The first, supported by strict consensus of most parsimonious trees, suggests that multituberculates (but not other alllotherians) are closely related to a clade including spalacotheriids + crown therians (Trechnotheria as redefined herein). Alternatively, allotherians can be placed outside the mammalian crown group by a constrained search that reflects the traditional emphasis on the uniqueness of the multituberculate dentition. Given our dataset, these alternative topologies differ in tree−length by only ~0.6% of the total tree length; statistical tests show that these positions do not differ significantly from one another. Similarly, there exist two alternative positions of eutriconodonts among Mesozoic mammals, contingent on the placement of other major mammalian clades. Of these, we tentatively favor recognition of a monophyletic Eutriconodonta, nested within the mammalian crown group. We suggest that the “obtuse−angle symmetrodonts” are paraphyletic, and that they lack reliable and unambiguous synapomorphies.

Źródło:

Acta Palaeontologica Polonica; 2002, 47, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 57.

Tytuł:

Late Miocene bovids from Serefkoy-2 (SW Turkey) and their position within the sub-Paratethyan biogeographic province

Autorzy:

Kostopoulos, D.S.
Karakutuk, S.

Powiązania:

https://bibliotekanauki.pl/articles/945611.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Late Miocene
Miocene
Bovidae
biogeography
Mammalia
Antilopinae
Turolian
Turkey [geogr.]
Anatolia region

Opis:

We describe new fossil bovid craniodental remains from the Upper Miocene fossil site of Şerefköy-2, Yatağan Basin, SW Turkey. The new material belongs to six species: Gazella cf. G. capricornis, Palaeoryx pallasi, Sporadotragus parvidens, Skoufotragus cf. Sk. schlosseri, Urmiatherium rugosifrons, and ?Sinotragus sp., which together indicate a latest middle–early Late Turolian (Late Miocene) age. Medium-to-large bovid taxa prevail over small ones, and protoryxoid bovids clearly dominate the assemblage. An analysis of the taxonomic structure, size and diet spectra of several Turolian bovid assemblages from Greece and Turkey reveals Şerefköy-2 to be a member of a mammalian palaeocommunity particular to southwestern Anatolia, which in turn forms part of the sub-Paratethyan biogeographic province.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 49-66
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 58.

Tytuł:

Mass estimation of Santacrucian sloths from the Early Miocene Santa Cruz Formation of Patagonia, Argentina

Autorzy:

Toledo, N.
Cassini, G.H.
Vizcaino, S.F.
Bargo, M.S.

Powiązania:

https://bibliotekanauki.pl/articles/946022.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
xenarthra
folivora
santacrucian sloths
body mass
substrate preference
paleobiology
miocene
argentina

Opis:

Miocene deposits of the Santa Cruz Formation, Patagonia, comprise a diverse and excellently preserved vertebrate fauna, allowing detailed paleobiological and paleoecological studies based on three ecological parameters: body mass, diet, and substrate preference. In contrast to the small and arboreal extant sloths, Bradypus and Choloepus, Santacrucian sloths were much more diverse and larger, and comprised 11 genera previously characterized as arboreal or climbing forms. Here, we focus on body mass estimation based on measurements of postcranial elements. We present a morphometric database comprising 64 linear, base-ten logged variables applied to Santacrucian sloths and a wide sample of extant mammals, as well as the body mass of the extant taxa as reported in the literature. To detect any potential phylogenetical bias, we performed a variance decomposition test on our sample of extant mammals. Based on four orthogram statistics, logged body mass was found not to be dependent on phylogenetic tree topology. Predictive equations for the body mass of extant mammals were generated through multiple regression analysis, using weighting procedures to avoid taxonomic biases and stepwise analysis to discard redundant variables. Using this procedure, we derived separate equations for the scapula, humerus, radius, ulna, pelvis, femur, tibia plus fibula, astragalus, and calcaneum. These equations were then applied to estimate the body mass of our sample of Santacrucian sloths. We obtained an average body mass of about 70 kg for the megalonychid Eucholoeops. Among stem megatherioids, Hapalops ranged between 30 and 80 kg, Analcimorphus was estimated at 67 kg, and Schismotherium at 44 kg. Larger genera included the megatheriid Prepotherium (~123 kg), and the mylodontids Analcitherium (~88 kg) and Nematherium (~89 kg). The medium to large body size of Santacrucian sloths imposed constraints on their climbing abilities. Megalonychids and stem megatherioids were likely unable to access the finest branches, while megatheriids and mylodonts were more terrestrial forms.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 2; 267-280
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 59.

Tytuł:

The Gashatan [Late Paleocene] mammal fauna from Subeng, Inner Mongolia, China

Autorzy:

Missiaen, P
Smith, T.

Powiązania:

https://bibliotekanauki.pl/articles/20795.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Gashatan
paleontology
China
Subeng
Late Paleocene
Carpolestidae
mammal fauna
Inner Mongolia
Multituberculata
Mammalia

Opis:

The Paleocene–Eocene boundary is of particular importance for the evolution of mammals and the poorly known Asian mammal faunas from this period have received much attention. The late Paleocene Subeng site in Inner Mongolia (China) has come under study only recently, and here we present the first complete description of its mammal fauna. Two new species are described, the neoplagiaulacid multituberculate Mesodmops tenuis sp. nov. and the praolestine nyctitheriid Bumbanius ningi sp. nov., representing stratigraphic range extensions of the respective genera into the Paleocene. Previously unknown parts of the dentition are described here for the eurymylid Eomylus bayanulanensis, the sarcodontid Hyracolestes ermineus, the cimolestid Tsaganius ambiguus, the carpolestid Subengius mengi, as well as the femur of the mesonychid Dissacus serratus. For most taxa, the new specimens from Subeng provide new phylogenetic and/or biostratigraphic information. We confirm the inclusion of Hyracolestesin the Sarcodontinae and elevate this group to the rank of family, the Sarcodontidae, separate from Micropternodontidae. In the case of Subengius mengi an updated cladistic analysis of carpolestids supports the hypothesis that Subengius is derived from an evolved Elphidotarsius−like ancestor in the early to middle Tiffanian of North America. A total of 17 species is identified, including well−known biostratigraphic markers for the late Paleocene Gashatan Asian Land Mammal Age such as Lambdopsalis bulla, Prionessus sp., Palaeostylops iturus, Pseudictops lophiodon, Tribosphenomys minutus, and Dissacus serratus. We propose that the Gashatan faunas are less endemic than previously thought, and result from a significant exchange with North American faunas from the late Paleocene.

Źródło:

Acta Palaeontologica Polonica; 2008, 53, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 60.

Tytuł:

Body mass estimation in amphicyonid carnivoran mammals: A multiple regression approach from the skull and skeleton

Autorzy:

Figueirido, B.
Perez-Claros, J.A.
Hunt, R.M.Jr.
Palmqvist, P.

Powiązania:

https://bibliotekanauki.pl/articles/21366.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

body mass
estimation
amphicyonid
mammal
skull
skeleton
Mammalia
Carnivora
Amphicyonidae
multiple regression
paleontology

Opis:

The body masses of sixteen species of amphicyonids (Mammalia, Carnivora, Amphicyonidae) from the New and Old World were estimated on the basis of 86 osteological variables measured from the craniodental (N = 44) and postcranial (N = 42) skeleton of living species of Canidae and Ursidae. Given the absence of complete and well preserved skeletons of amphicyonids in the fossil record, multiple regression functions were derived separately from measurements taken from the mandible, the cranium and the major limb bones. The accuracy of the regression functions was evaluated using the percentage prediction error and the percentage standard error of the estimates. Mass values were calculated with these equations using measurements taken in adult individuals from a number of daphoenine and amphicyonine species. Results obtained show that three distinct size classes of amphicyonids emerged through the evolutionary history of the “beardog” family and that these size classes correlate with presumably different ecomorphs. Quantitative estimates of body size of amphicyonids are critical for deciphering the paleobiology of this poorly understood family of large fissiped carnivorans and can be used for placing it within a broader ecological context.

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 61.

Tytuł:

Africanacetus from the sub-Antarctic region: The southernmost record of fossil beaked whales

Autorzy:

Gol'din, P.E.
Vishnyakova, K.A.

Powiązania:

https://bibliotekanauki.pl/articles/22792.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
Africanacetus
fossil
whale
Mammalia
Cetacea
Ziphiidae
hypermorphosis
sexual selection
Antarctic
Subantarctic Region

Opis:

We report two partial skulls of fossil beaked whales (Odontoceti, Ziphiidae) of uncertain age trawled from the sea floor of the sub−Antarctic Indian Ocean (58 to 60S), representing the southernmost record of the family. The skulls possess diag− nostic features of the genus Africanacetus, several specimens of which have been recovered from the sea floor off South Africa, but differ from the type and only known species Africanacetus ceratopsis in their larger size. This difference may either reflect intraspecific variation or indicate the existence of a hitherto unrecognised species. The two specimens are characterised by unusually developed mesorostral ossifications, combined with maxillary crests occurring in the facial re− gion. Both of the latter are found in a range of extant and extinct ziphiids, and known to be sexually dimorphic in extant beaked whales. These structures may be the result of hypermorphosis driven by sexual selection, and could be involved in male−specific behaviour.

Źródło:

Acta Palaeontologica Polonica; 2013, 58, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 62.

Tytuł:

Early Miocene evolution of the rodent Megacricetodon in Europe and its palaeobiogeographical implications

Autorzy:

Oliver, A.
Pelaez-Campomanes, P.

Powiązania:

https://bibliotekanauki.pl/articles/22836.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Miocene
evolution
rodent
Mammalia
Rodentia
Cricetodontidae
migration
endemism
Megacricetodon
paleobiogeography
Early Miocene
Europe

Opis:

The Megacricetodon material from Aliveri (Isle of Evia, Greece) was previously assigned to Megacricetodon primitivus, implying palaeobiogeographical relationship between south-eastern and south-western Europe. The material from Aliveri is here assigned to the new species Megacricetodon hellenicus sp. nov. This form has significant morphological differences compared to other Early Miocene species from Europe. This new evolutionary hypothesis of this genus has implications on the Early Miocene paleobiogeography of Europe. This work presents a new interpretation on the earliest European representative of the genus Megacricetodon from Aliveri localities. Analyses of the Megacricetodon material from MN 4 and MN 5 localities enable to propose a new palaeobiogeographical framework in which there are three main migration events of the genus Megacricetodon into Europe, each corresponding to different lineages that evolved independently. The new Greek taxon is considered the first migration wave from Anatolia, representing an endemic lineage different from any other European Megacricetodon.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 63.

Tytuł:

New Late Cretaceous mammals of southern Kazakhstan

Autorzy:

Averianov, A O

Powiązania:

https://bibliotekanauki.pl/articles/23289.pdf

Data publikacji:

1997

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

fauna
mammal
Cretaceous
Mammalia
Mongolia
Deltatheridium nessovi
morphology
Kazakhstan
Multituberculata
multituberculate mammal
paleontology

Opis:

Mammalian remains from the lower part of the Darbasa Formation (lower Campanian) at the 'Grey Mesa' locality in the Alymtau Range, southern Kazakhstan, are described. They include ?Bulganbaatar sp. (Multituberculata), Deltatheridium nessovi, sp. n. (Deltatheroida), and four eutherians: an undeterminated ?otlestid kennalestoid (?Otlestidae), ?Alymlestes sp. (Zalambdalestidae), ?Aspanlestes sp. (Zhelestidae), and an undeterminated eutherian. This new Cretaceous fauna is most similar to that from the Djadokhta Formation in Mongolia and may tentatively confirm an early Campanian age for the latter.

Źródło:

Acta Palaeontologica Polonica; 1997, 42, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 64.

Tytuł:

Demodex phylloides [Acari, Demodecidae] as a specific parasite of Sus scrofa [Mammalia, Artiodactyla]

Autorzy:

Fryderyk, S
Izdebska, J.N.

Powiązania:

https://bibliotekanauki.pl/articles/836708.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

pig
parasite
Demodex phylloides
wild boar
Polska
Demodecidae
Artiodactyla
Mammalia
Sus scrofa
Acari

Opis:

Within 1994-2000, sections of skin collected from eleven areas on the body of 650 wild boars and 85 pigs living in the northern Poland and in the Great Poland were examined. The D. phylloides infestation in the wild boar was observed to be very heavy (prevalence 32%, mean intensity 74 ind:). In contrast, the domestic pig turned out to be free of the parasite. The wild boar D. phylloides infestations are symptomless. The parasite is relatively rare in the domestic pig, although the high animal density typical of farm stocks should aid in its spreading. Compared to that in the wild boar, the pigs affected show associated skin symptoms. Where demodicosis did occur, most often the entire population was suffering of the condition. Most probably, the wild boar is the original host of D. phylloides. The hair follicle mile in question is very frequent in the wild boar, but produces symptomless infestations. The parasite occurs more seldom in the domestic pig, but - in contrast - the infestations are much more violent.

Źródło:

Annals of Parasitology; 2001, 47, 4
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 65.

Tytuł:

The fossil record of camelids demonstrates a late divergence between Bactrian camel and dromedary

Autorzy:

Geraads, D.
Didier, G.
Barr, W.A.
Reed, D.
Laurin, M.

Powiązania:

https://bibliotekanauki.pl/articles/2082155.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Camelidae
phylogeny
divergence time
fossil record
birth-and-death models
Pleistocene
Africa

Opis:

A new compilation of the Old World fossil record of Camelidae and a recent phylogenetic analysis allow a new assessment of the timing of the clade’s diversification. Using a recent implementation of the fossilized birth-death process, we show that the divergence between Bactrian camel and dromedary has a peak probability density around 1 Ma and probably occurred less than 2 million years ago. These dates are much younger than molecular estimates, which place the divergence between the dromedary and the Bactrian camel between 4 and 8 million years ago. Calibration problems in molecular dating seem to explain much of this difference.

Źródło:

Acta Palaeontologica Polonica; 2020, 65, 2; 251-260
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 66.

Tytuł:

The platacanthomyine rodent Neocometes from the Miocene of South Korea and its paleobiogeographical implications

Autorzy:

Lee, Y.-N.
Jacobs, L.L.

Powiązania:

https://bibliotekanauki.pl/articles/20194.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

platacanthomyine rodent
rodent
Neocometes
Mammalia
Rodentia
Platacanthomyinae
Bukpyeong Formation
Miocene
South Korea
paleobiogeography

Opis:

A left first lower molar of Neocometes from the Bukpyeong Formation, South Korea is more similar to Neocometes similis and Neocometes cf. similis from Europe than to Neocometes orientalis from Thailand, and is therefore referred to Neocometes aff.similis. The new discovery of Neocometesis important in that it is the first evidence in Asia to show close faunal affinity to European Neocometes. It is also of paleobiogeographic significance for the subfamily Platacanthomyinae, because it represents the easternmost occurrence of this subfamily in Eurasia, implying there was continuous gene flow between the Neocometes populations of eastern Asia and western Europe. The paleoclimatic interpretation for the Bukpyeong Formation based on the palynomorphs implies that Neocometes had wider climatic tolerances than either of the two extant platacanthomyine genera. The evolutionary stage of Korean Neocometesis comparable to material from European localities correlated with MN 4 and MN 5, which constrains the age of the Bukpyeong Formation to between 18 and 15.2 Mya.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 67.

Tytuł:

Middle Miocene carnivorans from the Monarch Mill Formation, Nevada

Autorzy:

Smith, K.
Czaplewski, N.
Cifelli, R.L.

Powiązania:

https://bibliotekanauki.pl/articles/21605.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Middle Miocene
Miocene
carnivore
Mammalia
Mustelidae
Canidae
Ailuridae
Felidae
Monarch Mill Formation
Nevada

Opis:

The lowest part of the Monarch Mill Formation in the Middlegate basin, west-central Nevada, has yielded a middle Miocene (Barstovian Land Mammal Age) vertebrate assemblage, the Eastgate local fauna. Paleobotanical evidence from nearby, nearly contemporaneous fossil leaf assemblages indicates that the Middle Miocene vegetation in the area was mixed coniferous and hardwood forest and chaparral-sclerophyllous shrubland, and suggests that the area had been uplifted to 2700–2800 m paleoaltitude before dropping later to near its present elevation of 1600 m. Thus, the local fauna provides a rare glimpse at a medium- to high-altitude vertebrate community in the intermountain western interior of North America. The local fauna includes the remains of fish, amphibians, reptiles, birds, and 25 families of mammals. Carnivorans, the focus of this study, include six taxa (three of which are new) belonging to four families. Canidae are represented by the borophagine Tomarctus brevirostris and the canine Leptocyon sp. indet. The earliest record and second North American occurrence of the simocyonine ailurid Actiocyon is represented by A. parverratis sp. nov. Two new mustelids, Brevimalictis chikasha gen. et sp. nov. and Negodiaetictis rugatrulleum gen. et sp. nov., may represent Galictinae but are of uncertain subfamilial and tribal affinity. The fourth family is represented by the felid Pseudaelurus sp. indet. Tomarctus brevirostris is limited biochronologically to the Barstovian land mammal age and thus is consistent with the age indicated by other members of the Eastgate local fauna as well as by indirect tephrochronological dates previously associated with the Monarch Mill Formation. Actiocyon parverratis sp. nov. extends the temporal range of the genus Actiocyon from late Clarendonian back to the Barstovian. The Eastgate local fauna improves our understanding of mammalian successions and evolution, during and subsequent to the Mid-Miocene Climatic Optimum (~14–17 Ma).

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 68.

Tytuł:

Analyzing the impact of conflictive dental characters on the phylogeny of octodontoid rodents

Autorzy:

Candela, A.M.

Powiązania:

https://bibliotekanauki.pl/articles/21639.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Rodentia
Octodontidae
Echimyidae
homology
parsimony analysis
tooth morphology
phylogenesis
octodontoid rodent
rodent

Opis:

Systematics of fossil octodontoids (Rodentia, Caviomorpha) is in great part based on insights into the knowledge of teeth, making the step of dental characterization certainly relevant for the evolutionary reconstruction of these rodents. Different homology hypotheses were proposed for the same tooth structures, a fact that indicates the importance of knowing on which criteria the dental characters supporting the classifications were based. In this line, I evaluate the step of characterization of certain conflictive molar characters previously used, and their impact on phylogeny of octodontoids. I explore which the criteria followed to propose the hypotheses of correspondences for these characters are in light of the anatomical evidence. Based on the outcome of phylogenetic trees obtained previously, I analyze if the evolutionary transformations are compatible with character states observed in the terminals. New cladistic analyses based on recoded molar characters indicate that, unlike results recently obtained, the unorthodox position of Sallamys, Protadelphomys, and Willidewu as basal ctenomyines is not recovered. The position of Caviocricetus, Acarechimys–Neophanomysas as Octodontinae is not maintained. These results indicate that reanalyses of conflictive dental characters, scrutinizing data matrices, are particularly necessary to evaluate the current controversy on the phylogeny of octodontoids. Lower molar character definition and character states delimitation in octodontoids, being relevant to phylogenetic reconstruction, should be founded on anatomical examination, following explicit criteria of homology. Alternative hypotheses of “primary homology” proposed for the same molar traits in octodontoids indicate that each main group of caviomorphs requires its own anatomical study.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 69.

Tytuł:

New dryolestidan mammal from the Hauterivian–Barremian transition of the Iberian Peninsula

Autorzy:

Cuenca−Bescos, G.
Badiola, A.
Canudo, J.I.
Gasca, J.M.
Moreno-Azanza, M.

Powiązania:

https://bibliotekanauki.pl/articles/21671.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

dryolestidan mammal
Hauterivian–Barremian
Iberian Peninsula
paleontology
Mammalia
Cladotheria
Dryolestida
Crusafontia
systematics
Cretaceous

Opis:

Crusafontia amoae sp. nov. (Dryolestida, Stem Cladotheria) is represented by two isolated upper molars (M4 or M5 and M6 or M7) from the terminal Hauterivian–basal Barremian (Early Cretaceous) of the El Castellar Formation (Galve, Spain). The molars have a deep ectoflexus, a distinct metacone, a continuous metacrista, and an antero−lingually placed paracone. They differ from the molars of the other species of the genus, Crusafontia cuencana, by their larger size, by their outsized parastyle, by the pointed lingual slope of the paracone, their more symmetrical appearance with a deep ectoflexus in occlusal view, and the well−developed metacone. Revision of three isolated teeth previously attributed to Crusafontia cuencana suggests that instead of being upper premolars belonging to Crusafontia cuencana they in fact belong to Pocamus pepelui, of the stem cladotherian superorder Zatheria, probably “peramuran”. As such, the stem Cladotheria record from the Early Cretaceous of the Iberian Peninsula is composed of two dryolestids (Crusafontia amoae and Crusafontia cuencana) and one zatherian (Pocamus pepelui).

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 70.

Tytuł:

A new species of water vole from the Early Pleistocene of Southern Europe

Autorzy:

Cuenca-Bescos, G.
Agusti, J.
Lira, J.
Melero-Rubio, M.
Rofes, J.

Powiązania:

https://bibliotekanauki.pl/articles/21806.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new species
water vole
mammalia
Rodentia
Arvicolinae
systematics
Spain
Early Pleistocene
Pleistocene
Europe

Opis:

In the Early Pleistocene Red Lower Unit of the Sima del Elefante site (Sierra de Atapuerca karst complex, Burgos, Spain), levels TE9–TE13, dental and mandibular remains of an arvicoline are referred to as the new species Arvicola jacobaeus sp. nov. The new species has medium−sized hypselodont molars, with abundant cementum in the re−entrant folds, and thick enamel band with differentiation of the Mimomys−type. The occlusal morphology of M3 is simple. The dental morphology of the new species resembles that of Arvicola sapidus, though smaller. It is more derived, in size and morphology than the Middle Pleistocene species Arvicola mosbachensis. The morphologic affinities among Arvicola jacobaeus, Arvicola terrestris, and A. sapidus suggest a common ancestry. A preliminary phylogenetic analysis corroborates that Mimomys savini is the sister group of the Arvicola clade.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 71.

Tytuł:

An extended range of the multituberculate Kryptobaatar and distribution of mammals in the Upper Cretaceous of the Gobi Desert

Autorzy:

Kielan-Jaworowska, Z
Hurum, J.H.
Badamgarav, D.

Powiązania:

https://bibliotekanauki.pl/articles/21961.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

multituberculate
stratigraphy
mammal
Gobi Desert
Cretaceous
Upper Cretaceous
Mammalia
Deltatheroida
Kryptobaatar
distribution
paleontology

Opis:

The Late Cretaceous multituberculate mammal Kryptobaatar dashzevegi Kielan−Jaworowska, 1970 is the most common mammalian taxon in the Upper Cretaceous (?lower Campanian) rocks of the Djadokhta Formation at Bayan Zag¹ (= Bayn Dzak) and Tögrög (= Toogreek), and in the beds of Ukhaa Tolgod in the Gobi Desert. Kryptobaataris also common in the Bayan Mandahu Formation (equivalent of the Djadokhta Formation), Inner Mongolia, China, represented there by K. mandahuensis. Kryptobaatar has not been reported as yet from the younger (?upper Campanian) Baruungoyot Formation nor from its stratigraphic equivalents, the red beds of Hermiin Tsav (= Khermeen Tsav). In this paper we report the discovery of an incomplete skull of Kryptobaatar dashzevegi at Hermiin Tsav I. It is the second mammal species common to the Djadokhta and Baruungoyot Formations (the first being Deltatheridium pretrituberculare). We provide a corrected list of mammals found in the Late Cretaceous localities of the Gobi Desert, and we argue (albeit inconclusively), that mammal evidence shows that the Ukhaa Tolgod beds might be closer in time of deposition to the Djadokhta Formation than to that of the Baruungoyot Formation.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 72.

Tytuł:

Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina

Autorzy:

Rasia, L.L.
Candela, A.M.

Powiązania:

https://bibliotekanauki.pl/articles/22264.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

systematics
biostratigraphy
significance
chinchillid rodent
rodent
Mammalia
Rodentia
Caviomorpha
Chinchillidae
paleontology
Pliocene
Argentina

Opis:

Two species of chinchillid rodents, Lagostomus (Lagostomopsis) incisus and “Lagostomus (Lagostomopsis) spicatus”, have been recorded from the Monte Hermoso Formation (Montehermosan–Lower Chapadmalalan, Early Pliocene) of southern Buenos Aires Province, eastern Argentina. L. (L.) incisus is based on skull remains,while “L. (L.) spicatus” is based onmandible remains and fragmentary skulls. Detailed study of specimens recovered from the upper section of the Monte Hermoso Formation, from the Irene “Formation”, and the Chapadmalal Formation (late Early–early Late Pliocene, Buenos Aires Province), some of them represented by associated skull and mandible remains, indicates that L. (L.) incisus and “L. (L.) spicatus” are synonymous, with the valid name being L. (L.) incisus. The differences between both nominal species are here attributed to different ontogenetic states and sexual dimorphism. The stratigraphic provenance of the fossil material of L. (L.) incisus indicates a temporal distribution of this species restricted to theMontehermosan?–Chapadmalalan (Early–early Late Pliocene), instead of the Montehermosan (Early Pliocene).

Źródło:

Acta Palaeontologica Polonica; 2013, 58, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 73.

Tytuł:

Middle Miocene bovids from Mae Moh Basin, Northern Thailand: The first record of the genus Eotragus from Southeast Asia

Autorzy:

Suraprasit, K.
Chaimanee, Y.
Chavasseau, O.
Jaeger, J.-J.

Powiązania:

https://bibliotekanauki.pl/articles/945603.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Middle Miocene
Miocene
Mae Moh Basin
Thailand
first record
Eotragus
Mammalia
Bovidae
Asia

Opis:

We describe the first bovid fossils from the late middle Miocene (13.4–13.2 Ma) of the Mae Moh Basin of Northern Thailand, and assign the material to the new species Eotragus lampangensis sp. nov., Eotragus cf. lampangensis, and an indeterminate bovid. Our material represents the first report of Eotragus from Southeast Asia, thus greatly extending the geographic distribution of this genus across the Old World continents. While comparisons of the Southeast Asian specimens with abundant material of E. clavatus from Sansan (France) and E. aff. clavatus from Tarazona de Aragón (Spain) indicate a high degree of intraspecific variation within single species of Eotragus, the existence of two distinct taxa at Mae Moh remains a possibility. Based on previous carbon isotope studies of Mae Moh herbivore tooth enamel, Eotragus lampangensis sp. nov. foraged predominantly in an ecotone between grassland and forest.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 67-78
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 74.

Tytuł:

A peculiar faunivorous metatherian from the early Eocene of Australia

Autorzy:

Beck, R.M.D.

Powiązania:

https://bibliotekanauki.pl/articles/945605.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Metatheria
Marsupialia
Sparassodonta
Archaeonothos henkgodthelpi
new species
Eocene
fossil
deposit
paleontology
Australia

Opis:

I describe Archaeonothos henkgodthelpi gen. et. sp. nov., a small (estimated body mass ~40–80 g) tribosphenic metatherian from the early Eocene Tingamarra Fauna of southeastern Queensland, Australia. This taxon, known only from a single isolated upper molar (M2 or M3) is characterised by a very distinctive combination of dental features that, collectively, probably represent faunivorous adaptations. These include: a straight, elevated centrocrista; a metacone considerably taller than the paracone; a wide stylar shelf (~50% of the total labiolingual width of the tooth); reduced stylar cusps; a long postmetacrista; a small and anteroposteriorly narrow protocone; an unbasined trigon; and the absence of conules. Some of these features are seen in dasyuromorphians, but detailed comparisons reveal key differences between A. henkgodthelpi and all known members of this clade. A. henkgodthelpi also predates recent molecular estimates for the divergence of crown-group Dasyuromorphia. Similar dental features are seen in a number of other metatherians, including the South American sparassodonts, Wirunodon chanku from the ?middle–late Eocene Santa Rosa local fauna of Peru, and Kasserinotherium tunisiense from the early Eocene Chambi fauna of Tunisia, although whether A. henkgodthelpi is closely related to any of these taxa is unclear based on available evidence. I therefore refer A. henkgodthelpi to Metatheria incertae sedis. Potential relatives of A. henkgodthelpi are unknown from any other Australian fossil deposit.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 123-129
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 75.

Tytuł:

A new species of the suid genus Kolpochoerus from Ethiopia

Autorzy:

Souron, A.
Boisserie, J.-R.
White, T.-D.

Powiązania:

https://bibliotekanauki.pl/articles/945607.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new species
Kolpochoerus
Mammalia
Suinae
Hylochoerus
Potamochoerus
Pliocene
Pleistocene
Awash River
paleontology
Ethiopia

Opis:

Although the suid genus Kolpochoerus is well known from the Plio-Pleistocene of Africa, the evolutionary history of one of its constituent species, K. majus, remained obscure until substantial fossil evidence accumulated during the last 20 years, largely from sites in Ethiopia. Here, we describe Kolpochoerus phillipi sp. nov., based on a fairly complete skull and the remains of additional individuals from ~2.5 Ma deposits at Matabaietu, in the Middle Awash study area of Ethiopia. Based on a phylogenetic analysis, we suggest that K. phillipi sp. nov. belongs to a clade of “bunolophodont suines” including K. majus and the extant giant forest hog Hylochoerus meinertzhageni. Within this clade, K. phillipi sp. nov. likely represents a potential ancestor of K. majus, based on its morphology and stratigraphic position.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 80-96
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 76.

Tytuł:

Osteoderm histology of Late Pleistocene cingulates from the intertropical region of Brazil

Autorzy:

Da Costa Pereira, P.V.L.G.
Victer, G.D.
Porpino, K.O.
Bergqvist, L.P.

Powiązania:

https://bibliotekanauki.pl/articles/945892.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

osteoderm
histology
Late Pleistocene
Pleistocene
Cingulata
mammalia
Glyptodontidae
Pachyarmatherium
paleohistology
intertropical region
Brazil

Opis:

During the Late Pleistocene, several possibly endemic cingulate species, known mostly from isolated osteoderms, carapace fragments, and caudal tubes, coexisted in the Brazilian Intertropical Region. Here, we describe the osteoderm microstructure of Pachyarmatherium brasiliense, as well as the glyptodonts Panochthus greslebini, Panochthus jaguaribensis and Glyptotherium sp., in order to provide additional species-diagnostic characters and shed light on their evolutionary relationships. Pachyarmatherium brasiliense lacks several derived features shared by glyptodonts and pampatheres, such as extensive bone remodeling, fibers arranged in large bundles, and relatively poorly developed layers of compact bone, thus supporting its exclusion from glyptodonts as suggested by a recent cladistic study. The osteoderm histology of P. greslebini resembles that of other species of Panochthus (e.g., Panochthus frenzelianus). By contrast, the presence of relatively thick layers of compact bone, the configuration and size of resorption areas, the absence of randomly oriented lateral fiber bundles, and the absence of an intermediary region between the compact and trabecular bone potentially support the exclusion of Panochthus jaguaribensis from the genus. Finally, osteoderms of the Brazilian specimens of Glyptodontinae share histological features with Glyptotherium floridanus, rather than Glyptodon, thus reinforcing their assignment to Glyptotherium. These results highlight the relevance of histological osteoderm characters in cingulate systematics, ands call for further and more comprehensive studies.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 3; 543-552
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 77.

Tytuł:

Demodex phylloides [Acari, Demodecidae] as a specific parasite of Sus scrofa [Mammalia, Artiodactyla]
DEMODEX PHYLLOIDES (ACARI, DEMODECIDAE) JAKO SPECYFICZNY PASOŻYT DZIKA SUS SCROFA (MAMMALIA, ARTIODACTYLA)

Autorzy:

Fryderyk, S.
Izdebska, J. N.

Powiązania:

https://bibliotekanauki.pl/articles/2148268.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

pig
parasite
Demodex phylloides
wild boar
Polska
Demodecidae
Artiodactyla
Mammalia
Sus scrofa
Acari

Opis:

Within 1994-2000, sections of skin collected from eleven areas on the body of 650 wild boars and 85 pigs living in the northern Poland and in the Great Poland were examined. The D. phylloides infestation in the wild boar was observed to be very heavy (prevalence 32%, mean intensity 74 ind:). In contrast, the domestic pig turned out to be free of the parasite. The wild boar D. phylloides infestations are symptomless. The parasite is relatively rare in the domestic pig, although the high animal density typical of farm stocks should aid in its spreading. Compared to that in the wild boar, the pigs affected show associated skin symptoms. Where demodicosis did occur, most often the entire population was suffering of the condition. Most probably, the wild boar is the original host of D. phylloides. The hair follicle mile in question is very frequent in the wild boar, but produces symptomless infestations. The parasite occurs more seldom in the domestic pig, but - in contrast - the infestations are much more violent.

Źródło:

Wiadomości Parazytologiczne; 2001, 47, 4; 797-800
0043-5163

Pojawia się w:

Wiadomości Parazytologiczne

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 78.

Tytuł:

The Middle Miocene fossil site Prebreza in Southern Serbia

Autorzy:

Stefanović, I.
Miljovic, D.

Powiązania:

https://bibliotekanauki.pl/articles/1204944.pdf

Data publikacji:

2004

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

ssaki
neogen
stanowisko dziedzictwa geologicznego
Prebreza
Serbia
Mammalia
Neogene
MN unit
geo-heritage site

Opis:

Paleontologiczne stanowisko Prebreza w południowej Serbii jest jednym z najważniejszych stanowisk europejskich wieku środkowo mioceńskiego. Jego liczna skamieniała fauna kręgowców różni się od skamieniałości znanych z innych europejskich stanowisk tego samego wieku. Bogata i unikatowa fauna ssaków wskazuje na szczególny klimat i środowisko obecne podczas Neogenu na półwyspie bałkańskim. Duże kolekcje ze stanowiska Prebreza i rozmiar tego stanowiska wzbudzają wielkie zainteresowanie badawcze paleontologów i innych naukowców zainteresowanych ewolucją fauny, paleogeografią i klimatem, a także specjalistów zajmujących się konserwacją stanowisk geologicznych.

Źródło:

Polish Geological Institute Special Papers; 2004, 13; 209-212
1507-9791

Pojawia się w:

Polish Geological Institute Special Papers

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 79.

Tytuł:

Early Cretaceous multituberculate mammals from the Kuwajima Formation [Tetori Group], central Japan

Autorzy:

Kusuhashi, N

Powiązania:

https://bibliotekanauki.pl/articles/22148.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Tedoribaatar
Cretaceous
paleontology
Kuwajima Formation
Eobaataridae
Japan
Tetori Group
Hakusanobaatar
Multituberculata
Early Cretaceous
Mammalia

Opis:

Hakusanobaatar matsuoi gen. et sp. nov. and Tedoribaatar reini gen. et sp. nov. are multituberculate mammals recovered from the Lower Cretaceous (Barremian to lower Aptian) Kuwajima Formation of the Tetori Group in the Shiramine district, Hakusan City, Ishikawa Prefecture, central Japan. Hakusanobaatar matsuoi is an eobaatarid multituberculate characterized by a P4 with cusp formula 3:5, and a P5 with cusp formula 2:6:?2. One of the specimens of H. matsuoi has the best preserved upper premolar series among known eobaatarid specimens. Based on the dentition of H. matsuoi, it is highly probable that the cimolodontan P4 is homologous with the “plagiaulacidan” P5. Tedoribaatar reini is also tentatively attributed to Eobaataridae, and shows a single−rooted p3 and loss of at least the permanent p2. On the basis of these apomorphic features, T. reini is considered to be the “plagiaulacidan” multituberculate that is most closely related to cimolodontans.

Źródło:

Acta Palaeontologica Polonica; 2008, 53, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 80.

Tytuł:

New multituberculate teeth from the Early Cretaceous of Morocco

Autorzy:

Hahn, G
Hahn, R.

Powiązania:

https://bibliotekanauki.pl/articles/22382.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

multituberculate
Denisodon
Early Cretaceous
fossil
Paulchoffatioidea
Cretaceous
Mammalia
remains
Morocco
Multituberculata
multituberculate tooth
paleontology

Opis:

Three new multituberculate teeth are described from the Early Cretaceous of Morocco. Denisodon moroccensis gen. et sp. nov. is established for a second lower molar which differs from that of Hahnodon taqueti, from the same locality, by a preserved posterior buccal cusp, a smaller posterior lingual cusp and the less indented lingual wall of the crown. The second tooth is a posterior upper premolar. It is represented by the posterior portion of its crown on which is present only one row of cusps, similar to the conditions in Kielanodon, Eobaatar, Bolodon, and the Pinheirodontidae. The third tooth is a lower incisor, similar to that in Kuehneodon. Both teeth are grouped as „Hahnodontidae, gen. et sp. indet.” Paulchoffatioidea new superfamily is established for the Paulchoffatiidae, Hahnodontidae, and Pinheirodontidae. It is characterized by the following autapomorphies: premolarisation of I2−C, presence of a third row of cusps on the posterior upper premolars and the basin−like structure of the m2. Hahnodontidae and Hahnodon are redefined.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 81.

Tytuł:

Kielantherium, a basal tribosphenic mammal from the Early Cretaceous of Mongolia, with new data on the aegialodontian dentition

Autorzy:

Lopatin, A
Averianov, A.

Powiązania:

https://bibliotekanauki.pl/articles/23180.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Kielantherium gobiense
Early Cretaceous
mammal
dentition
Cretaceous
Mammalia
Mongolia
Aegialodontia
Tribosphenida
tribosphenic mammal
paleontology

Opis:

Two additional specimens of the basal tribosphenid mammal Kielantherium gobiense, the first known aegialodont upper molar (possibly M2) and a dentary fragment with m1, are described from the Early Cretaceous Höövör locality in Mongolia. The upper molar shows an initial stage of the protocone development. Kielantherium gobiense has been known from two specimens only, and thus the new material doubles the hypodigm of this species. Kielantherium is clearly not a junior synonym of Aegialodon, as it differs from the latter in having a cusp−like mesiolabial cingulid cuspule f rather than prominent ridge−like precingulid. Kielantherium's lower postcanine dental formula (with four or more premolars and four molars) is distinctive and more primitive than in Peramus and Eutheria which have five premolars and three molars, and Metatheria which have three premolars and four molars.

Źródło:

Acta Palaeontologica Polonica; 2007, 52, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 82.

Tytuł:

New Eocene South American native ungulates from the Quebrada de los Colorados Formation at Los Cardones National Park, Argentina

Autorzy:

Fernandez, M.
Zimicz, A.N.
Bond, M.
Chornogubsky, L.
Arnal, M.
Cardenas, M.
Fernicola, J.C.

Powiązania:

https://bibliotekanauki.pl/articles/2082287.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
South American native ungulates
Casamayoran SALMA
Paleogene
Quebrada de Los
Colorados Formation
Argentina

Opis:

In the last few years, the Quebrada de Los Colorados Formation has become an important middle Eocene fossiliferous unit in Northwestern Argentina. In this unit, the South American native ungulates were until now only represented by the order Notoungulata, including one family of Typotheria and three of Toxodontia. In this contribution, we present a new faunistic assemblage of South American native ungulates, collected from outcrops of the Quebrada de Los Colorados Formation at Los Cardones National Park, Calchaquí Valleys, Salta Province (Argentina). This new assemblage is constituted by the following taxa: litoptern Didolodontidae cf. Ernestokokenia sp., Astrapotheria indet., and notoungulate Notostylopidae Homalostylops sp., a ?Homalostylops sp., typothere “Oldfieldthomasiidae” Colbertia falui sp. nov., Colbertia lumbrerense, and Colbertia sp. and toxodont “Notohippidae” Pampahippus secundus. Colbertia falui sp. nov. differs from the other species of Colbertia by the following features: lower cheek teeth with both more labially angular and oblique trigonid; lower premolars more labio-lingually compressed; with proportionally larger trigonid, and shorter talonid; ectoflexid transversally deeper; lower molars with a more developed paralophid, and more expanded metalophid and entoconid; the latter is located in a more mesial position, being closer to the metaconid; deep and lingually narrower talonid basin; disto-lingual sulcus transversally shallower; more developed cingulids; and m3 with less lingually projected hypoconulid. This new fauna markedly increases the taxonomic richness known for this formation since it includes the first mention of notostylopids, “oldfieldthomasiids”, litoptern didolodontids, and astrapotheres. With the current evidence, we postulate an ungulate migration from Patagonia to Northwestern Argentina during the Eocene. We also hypothesize that the observed taxonomic differences among the Quebrada de Los Colorados, Geste, and Lumbrera formations are more probably associated to orogenic factors that have regulated the faunal dynamic in Northwestern Argentina during the Paleogene than to a differential sampling effort or taphonomic biases.

Źródło:

Acta Palaeontologica Polonica; 2021, 66, 1; 85-97
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 83.

Tytuł:

Suidae and Sanitheriidae from Wadi Moghra, Early Miocene, Egypt

Autorzy:

Pickford, M.
Miller, E.R.
El-Barkooky, A.N.

Powiązania:

https://bibliotekanauki.pl/articles/20171.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Suidae
Sanitheriidae
Wadi Moghra
Early Miocene
Miocene
Egypt
paleontology
Mammalia
biochronology
Africa
paleoenvironment condition

Opis:

New suid and sanithere material from Wadi Moghra, early Miocene, Egypt, is described and discussed. The new material greatly improves the sample size and diversity of suoids known from North Africa, and includes one species of Sanitheriidae and three species of Kubanochoerinae. The Moghra suoid assemblage most closely resembles that from Gebel Zelten, Libya, suggesting that at least part of the Moghra deposits may overlap in time with part of Zelten, i.e., is equivalent in age to MN 4–5 of the European mammal zonation, or PIII of the East African one. Information from suids and sanitheres is consistent with previous interpretations, that the Moghra deposits were formed under swampy and littoral paleoenvironmental conditions.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 84.

Tytuł:

The oldest and youngest records of afrosoricid placentals from the Fayum Depression of northern Egypt

Autorzy:

Seiffert, E.R.

Powiązania:

https://bibliotekanauki.pl/articles/20820.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

oldest record
youngest record
Mammalia
Adapisoriculidae
Tenrecidae
Garatherium
Widanelfarasia
Eocene
Oligocene
Faiyum Oasis
Egypt

Opis:

Tenrecs (Tenrecoidea) and golden moles(Chrysochloroidea) are among the most enigmatic mammals alive today. Molecular data strongly support their inclusion in the morphologically diverse clade Afrotheria, and suggest that the two lineages split near the K−T boundary, but the only undoubted fossil representatives of each superfamily are from early Miocene (~20 Ma) deposits in East Africa. A recent analysis of partial mandibles and maxillae of Eochrysochloris, Jawharia, and Widanelfarasia, from the latest Eocene and earliest Oligocene of Egypt, led to the suggestion that the derived “zalambdomorph” molar occlusal pattern (i.e., extreme reduction or loss of upper molar metacones and lower molar talonids) seen in tenrecoids and chrysochloroids evolved independently in the two lineages, and that tenrecoids might be derived from a dilambdomorph group of “insectivoran−grade” placentals that includes forms such as Widanelfarasia. Here I describe the oldest afrosoricid from the Fayum region, ~37 Ma Dilambdogale gheerbranti gen. et sp. nov., and the youngest, ~30 Ma Qatranilestes oligocaenus gen. et sp. nov. Dilambdogale is the most generalized of the Fayum afrosoricids, exhibiting relatively broad and well−developed molar talonids and a dilambdomorph arrangement of the buccal crests on the upper molars, whereas Qatranilestesis the most derived in showing relatively extreme reduction of molar talonids. These occurrences are consistent with a scenario in which features of the zalambdomorph occlusal complex were acquired independently and gradually through the later Paleogene. Phylogenetic analysis places Dilambdogale and Widanelfarasia as sister taxa to the exclusion of crown afrosoricids, but derived features that these taxa share with early Miocene Protenrec hint at the possibility that both taxa might be stem tenrecoids. Late Paleocene Todralestes and Afrodon from Morocco are similarly placed as stem afrosoricids, indicating that African adapisoriculids (including Garatherium) might also be relevant to the origin of the tenrecoid and chrysochloroid clades.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 85.

Tytuł:

Late Miocene potamarchine rodents from southwestern Amazonia, Brazil - with description of new taxa

Autorzy:

Kerber, L.
Negri, F.R.
Ribeiro, A.M.
Vucetich, M.G.
De Souza-Filho, J.P.

Powiązania:

https://bibliotekanauki.pl/articles/20829.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Late Miocene
Miocene
potamarchine rodent
Mammalia
Rodentia
Caviomorpha
Neogene
Solimoes Formation
rodent
Amazonia
Brazil

Opis:

The fossil rodents from the southwestern Amazonia of Brazil have been studied since the first half of the 20th century. Several caviomorph rodents were reported for the Neogene of this region, mainly neoepiblemids and dinomyids. Until recently, the record of dinomyids in the Solimões Formation (Late Miocene) was predominantly based on a few isolated teeth, which made it difficult to make more accurate taxonomic identifications due to the scarcity of diagnostic characters. Here, new remains, more complete than those previously reported, of potamarchine dinomyids from the Neogene of Brazil are described. A new species of Potamarchus and a new genus and species of a Potamarchinae are erected. In addition, new material of Potamarchus murinus and Potamarchus sp. is identified. These data suggest a higher diversity of dinomyids in in the western Amazonia than previously supposed.

Źródło:

Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 86.

Tytuł:

New artiodactyl ruminant mammal from the Late Oligocene of Pakistan

Autorzy:

Metais, G
Antoine, P.O.
Marivaux, L.
Welcomme, J.L.
Ducrocq, S.

Powiązania:

https://bibliotekanauki.pl/articles/20876.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Ruminantia
ruminant
Palaeohypsodontus zinensis
mammal
Bovidae
Mammalia
artiodactyl ruminant
Oligocene
Pakistan
Late Oligocene
paleontology

Opis:

Dental and postcranial material of the bovid−like ruminant Palaeohypsodontus zinensis sp. nov. is reported from the Oligocene of the Bugti Hills (Balochistan, Pakistan). This finding extends the geographic distribution of this dentally highly derived ruminant, which was previously restricted to the early Oligocene of Mongolia and China. The inclusion of Palaeohypsodontus within the Bovidae is disputed on the basis of astragalus characters, and the taxonomic status of the Oligo−Miocene Eurasian bovid−like ruminants is briefly discussed. It is concluded that the assignment of Palaeohypsodontus to the Bovidae would be premature. More dental and postcranial material of this genus as well as additional fossils of early bovids are necessary to shed new light on the phylogenetic relationships within the first representatives of that family in Eurasia.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 87.

Tytuł:

Structure and evolution of mammoth molar enamel

Autorzy:

Ferretti, M P

Powiązania:

https://bibliotekanauki.pl/articles/22594.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

systematics
structure
Proboscidea
Middle Pliocene
Mammalia
mammoth
terminology
evolution
Pleistocene
Mammuthus
Mammuthus meridionalis
paleontology

Opis:

This work investigates the structure of Eurasian Plio–Pleistocene Mammuthus enamel, with attention to diagenesis and individual variability. A focal point of this study was to determine whether morphological trends in Mammuthus molars were accompanied by correlated enamel microstructure changes. In the examined four taxa the enamel of the cheek teeth consists of three layers delimited by two major discontinuities in enamel prism direction. Noticeably, the enamel capping the occlusal end of the unworn molar plates retains a less derived two−layered structure, similar to that found in the basal proboscidean Moeritherium. In Mammuthus meridionalis the third deciduous premolar is differentiated from all other teeth in having more strongly decussating Hunter−Schreger bands in the middle layer, as a possible reinforcement of the very thin enamel. Evidence from this analysis shows that, in the transition from late Middle Pliocene M. rumanus to Late Pleistocene M. primigenius, the middle enamel layer, which is made up of prisms at an angle to the occlusal surface, providing greater resistance against wear, increased its relative thickness. This is consistent with the hypothesis that Mammuthus adapted to a more abrasive diet. Comparison with other proboscidean taxa indicates that the schmelzmuster (enamel pattern) found in Mammuthus is a synapomorphy of the Elephantoidea.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 88.

Tytuł:

Plesiosoricids from Early Oligocene fissure fillings in South Germany, with remarks on plesiosoricid phylogeny

Autorzy:

Ziegler, R

Powiązania:

https://bibliotekanauki.pl/articles/22761.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

plesiosoricid
Early Oligocene
Oligocene
paleontology
fissure filling
Germany
phylogenesis
Mammalia
Lipotyphla
Plesiosoricidae
Butselia
systematics

Opis:

The plesiosoricids from two fissure fillings from Möhren on the Franconian in South Germany are described. All belong to Butselia biveri. Möhren 12 correlates with the early Oligocene standard level Soumailles, corresponding to the Paleogene mammal unit MP 21, and Möhren 13 with the standard level Villebramar, which corresponds to MP 22. These occurrences represent the first record of the genus Butselia in Germany. A review of the known plesiosoricid species and a cladistic analysis of Butselia and Plesiosorex are presented. It shows the basal position of Butselia with respect to Plesiosorex, and the basal position of Plesiosorex soricinoides with respect to the other Plesiosorex species.

Źródło:

Acta Palaeontologica Polonica; 2009, 54, 3; 365-371
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 89.

Tytuł:

Sexual dimorphism in perissodactyl rhinocerotid Chilotherium wimani from the Late Miocene of the Linxia Basin (Gansu, China)

Autorzy:

Chen, S.
Deng, T.
Hou, S.
Shi, Q.
Pang, L.

Powiązania:

https://bibliotekanauki.pl/articles/23414.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

sexual dimorphism
perissodactyl rhinocerotid
Mammalia
Perissodactyla
Chilotherium wimani
Late Miocene
Miocene
Linxia basin
China

Opis:

Sexual dimorphism is reviewed and described in adult skulls of Chilotherium wimani from the Linxia Basin. Via the analysis and comparison, several very significant sexually dimorphic features are recognized. Tusks (i2), symphysis and occipital surface are larger in males. Sexual dimorphism in the mandible is significant. The anterior mandibular morphology is more sexually dimorphic than the posterior part. The most clearly dimorphic character is i2 length, and this is consistent with intrasexual competition where males invest large amounts of energy jousting with each other. The molar length, the height and the area of the occipital surface are correlated with body mass, and body mass sexual dimorphism is compared. Society behavior and paleoecology of C. wimani are different from most extinct or extant rhinos. M/F ratio indicates that the mortality of young males is higher than females. According to the suite of dimorphic features of the skull of C. wimani, the tentative sex discriminant functions are set up in order to identify the gender of the skulls.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 90.

Tytuł:

A new tribe of castoroidine beavers from the late Arikareean to Hemphillian (Oligocene–Miocene) of western North America

Autorzy:

Korth, William W.

Powiązania:

https://bibliotekanauki.pl/articles/945208.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

mammalia
rodentia
castoridae
castoroidinae
cranial anatomy
dental terminology
north american
land mammal ages
colorado

Opis:

Two genera of Miocene beavers (Castoridae), Hystricops and Priusaulax are referred to a new tribe Hystricopini of the subfamily of giant beavers, Castoroidinae based on cranial and dental morphologies. Previously undescribed and more complete specimens of Hystricops demonstrate that it is referable to the Castoroidinae rather than the Castorinae. Along with Priusaulax, it is believed to represent a group of basal castoroidines, distinct from later Castoroidinae by the retention of the primitive morphology of the contact of the lacrimal bone with the jugal on the cranium, as well as more primitive dental morphologies (lower crown-height and simple occlusal pattern of cheek teeth). A partial cranium and several isolated teeth from the Hemingfordian of Colorado, originally referred to Anchitheriomys?, are referred here to a new species, Priusaulax wilsoni sp. nov. Monosaulax senrudi from the Barstovian of Montana is also referred to Priusaulax. Hystricops is limited to the type species H. venustus from the Clarendonian and Barstovian North American Land Mammal Age (NALMA), and H. browni from the Hemphillian NALMA.

Źródło:

Acta Palaeontologica Polonica; 2017, 62, 2; 249-258
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 91.

Tytuł:

Enamel microstructure of permanent and deciduous teeth of a species of notoungulate Toxodon : Development, functional, and evolutionary implications

Autorzy:

Braunn, Patrícia R.
Ferigolo, Jorge
Ribeiro, Ana M.

Powiązania:

https://bibliotekanauki.pl/articles/2216330.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Toxodontidae
euhypsodont teeth
enamel-dentine junction
Hunter-Schreger bands
Pleistocene
Brazil
neonatal line

Opis:

Enamel microstructure is studied here in Toxodon sp., a notoungulate from the Pleistocene of South America. The material includes 13 specimens from outcrops in São Paulo and Rio Grande do Sul states, Brazil. Analyses of ground sections of upper and lower incisors, premolars, molars, and deciduous premolars by scanning electron microscopy reveal Schmelzmuster with three enamel types: modified radial enamel (MRE), associated with the enameldentine junction (EDJ); Hunter Schreger bands (HSB), an intermediary layer with decussating prisms; and radial enamel (RE), a layer placed next to the outer enamel surface. Microstructural features vary in each tooth category, on the buccal and lingual sides, as well as in the different regions of each tooth. The proportion of RE increases in the occlusal area of I2, which commonly exhibits intense wear, and may be related to abrasion resistance. HSB thickness ranges from 6 to 20 prisms, with the thickest portions placed in areas with intense masticatory loads. The most concentrated packing densities of HSB in the upper incisors and lower premolars suggest these teeth bore the greatest biomechanical demands. Incisors and cheek teeth show differentiation of Schmelzmuster, suggesting dental antagonistic contact areas, as well as leading and trailing edges. Deciduous premolars exhibit enamel in the early stages of development, and a neonatal line is observed almost parallel to the EDJ, possibly related to biological stress during birth. The EDJ is scalloped in all dental categories, with varying sizes and shapes. Larger and more pronounced scallops are observed in I2, i3, p4, and in the enamel folds of the upper and lower cheek teeth, associated with microstructural features indicative of greater biomechanical demands. Microstructural enamel findings presented here corroborate morphological trends in the dentition of Notoungulata related to hypsodonty, providing greater resistance to the consumption of abrasive diets in these euhypsodont-toothed herbivores.

Źródło:

Acta Palaeontologica Polonica; 2021, 66, 2; 449-464
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 92.

Tytuł:

Moles [Talpidae] from the late Middle Miocene of South Germany

Autorzy:

Ziegler, R

Powiązania:

https://bibliotekanauki.pl/articles/21675.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Myxomygale gracilis
Leptoscaptor robustior
Middle Miocene
Mammalia
Leptoscaptor bavaricum
Talpidae
Germany
mole
Tenuibrachiatum storchi
paleontology

Opis:

The moles from the South German fissure fillings Petersbuch 6, 10, 18, 31, 35, 48 include 14 species, four of which are new: Leptoscaptor bavaricum gen. et sp. nov., Leptoscaptor robustior gen. et sp. nov., Myxomygale gracilis sp. nov. and Tenuibrachiatum storchi gen. et sp. nov. Most samples are characterised by their high species diversity. Talpa minuta is the most common species in nearly all samples. Leptoscaptor is characterised by a slender humerus and by the loss of lower antemolars. It is interpreted as a Miocene offshoot of the Scalopini. Myxomygale gracilis represents the latest record of the genus. Tenuibrachiatum storchi has a slender humerus and one lower incisor is lost. The species is structurally ancestral to the extant Urotrichus. The genus Pseudoparatalpa Lopatin, 1999 is considered a synonym of Paratalpa. The talpids of the Petersbuch fissures are in line with a Middle Miocene correlation of MN 7+8 as already indicated by the cricetids. The remains of desmans in the Petersbuch 6 fissure filling indicate the proximity of water. The presence of Urotrichini in nearly all samples, albeit scanty, suggests a forestal environment within the range of the owls, which preyed on them.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 93.

Tytuł:

An Australian multituberculate and its palaeobiogeographic implications

Autorzy:

Rich, T H
Vickers-Rich, P.
Flannery, T.F.
Kear, B.P.
Cantrill, D.J.
Komarower, P.
Kool, L.
Pickering, D.
Trusler, P.
Morton, S.
Van Klaveren, N.
Fitzgerald, E.M.G.

Powiązania:

https://bibliotekanauki.pl/articles/22948.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Corriebaatar marywaltersae
Cretaceous
new species
multituberculate
Gondwana
fossil
paleontology
new genus
Australia
Multituberculata
Cimolodonta
Mammalia

Opis:

A dentary fragment containing a tiny left plagiaulacoid fourth lower premolar from the Early Cretaceous (Aptian) of Victoria provides the first evidence of the Multituberculata from Australia. This unique specimen represents a new genus and species, Corriebaatar marywaltersae, and is placed in a new family, Corriebaataridae. The Australian fossil, together with meagre records of multituberculates from South America, Africa, and Madagascar, reinforces the view that Multituberculata had a cosmopolitan distribution during the Mesozoic, with dispersal into eastern Gondwana probably occurring prior to enforcement of climatic barriers (indicated by marked differentiation in regional floras) in the Early Cretaceous.

Źródło:

Acta Palaeontologica Polonica; 2009, 54, 1; 1-6
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 94.

Tytuł:

A new omomyid primate from the earliest Eocene of southern England: First phase of microchoerine evolution

Autorzy:

Hooker, J.J.

Powiązania:

https://bibliotekanauki.pl/articles/20025.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new primate
omomyid primate
Eocene
England
microchoerine
evolution
Mammalia
Primates
Melaneremia
phylogenesis
Paleocene
Woolwich Formation

Opis:

A second species of the microchoerine omomyid genus Melaneremia, M. schrevei sp. nov. is described. It has been collected from the upper shelly clay unit of the Woolwich Formation, earliest Ypresian, Eocene, of Croydon, Greater London, UK. Phylogenetic analysis shows M. schrevei to be the most primitive member of the main clade of the Microchoerinae and demonstrates the initial dental evolution that separated this European subfamily from other omomyids. Calibration of the Woolwich upper shelly clay unit to the later part of the Paleocene–Eocene Thermal Maximum shows that speciation leading to the Microchoerinae took place within 170 ky of the beginning of the Eocene. Tentative identification of M. schrevei in the Conglomérat de Meudon of the Paris Basin suggests close time correlation with the upper part of the Woolwich Formation.

Źródło:

Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 95.

Tytuł:

Ailurid carnivoran mammal Simocyon from the late Miocene of Spain and the systematics of the genus

Autorzy:

Peigne, S
Salesa, M.J.
Anton, M.
Morales, J.

Powiązania:

https://bibliotekanauki.pl/articles/21488.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Ailuridae
red panda
Miocene
mammal
Mammalia
Carnivora
Simocyon
Europe
Ailurus fulgens
Spain
Madrid Basin
paleontology

Opis:

We describe the most complete and best−preserved materials assigned to Simocyon from Spain. Specimens come from the late Miocene (Vallesian) locality of Batallones−1, Province of Madrid and are assigned to Simocyon batalleri. Cranial, mandibular and dental anatomy of S. batalleri from Batallones−1 is described and compared with those of known species of Simocyon. We review the systematic status and the definition of the species of Simocyon and we analyse the morphological variation within Simocyon. Three species are recognized as valid. S. batalleri is known from several Vallesian localities (mainly MN 10) of Spain. S. diaphorus, from the early Vallesian of Germany (Mammal Zone MN 9), is the geologically oldest European species. The type species S. primigenius is Turolian in age and known from several localities of Europe, North America, and China. The species includes the junior synonyms S. zdanskyi and S. marshi. The status of Simocyon hungaricus is not resolved. Simocyon simpsoni is excluded here from Simocyon and reassigned to its original generic name Protursus. On the basis of the material described here, we propose a differential diagnosis for Simocyon batalleri. This species is morphologically intermediate between the more primitive S. diaphorus, which has a less reduced p3; and the more derived S. primigenius, characterized by a modified mandible (e.g., more vertical and more expanded coronoid process, longer angular process). The evolution of the genus Simocyon is characterized by a trend toward a more crushing adaptation involving at least a modification of the posterior part of the mandible. A reconstruction of the skull and life appearance of Simocyon is proposed.

Źródło:

Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 96.

Tytuł:

New early Eocene tapiromorph perissodactyls from the Ghazij Formation of Pakistan, with implications for mammalian biochronology in Asia

Autorzy:

Missiaen, P.
Gingerich, P.D.

Powiązania:

https://bibliotekanauki.pl/articles/22715.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Early Eocene
Eocene
tapiromorph perissodactyl
Ghazij Formation
Pakistan
biochronology
Asia
Mammalia
Perissodactyla
Isectolophidae
Lophialetidae
Eomoropidae

Opis:

Early Eocene mammals from Indo−Pakistan have only recently come under study. Here we describe the first tapiromorph perissodactyls from the subcontinent. Gandheralophus minor gen. et sp. nov. and G. robustus sp. nov. are two species of Isectolophidae differing in size and in reduction of the anterior dentition. Gandheralophus is probably derived from a primitive isectolophid such as Orientolophus hengdongensis from the earliest Eocene of China, and may be part of a South Asian lineage that also contains Karagalax from the middle Eocene of Pakistan. Two specimens are referred to a new, unnamed species of Lophialetidae. Finally, a highly diagnostic M3 and a molar fragment are described as the new eomoropid chalicothere Litolophus ghazijensissp. nov. The perissodactyls described here, in contrast to most other mammalian groups published from the early Eocene of Indo−Pakistan, are most closely related to forms known from East and Central Asia, where Eocene tapiromorphs are diverse and biochronologically important. Our results therefore allow the first biochronological correlation between early Eocene mammal faunas in Indo−Pakistan and the rest of Asia. We suggest that the upper Ghazij Formation of Pakistan is best correlated with the middle or late part of the Bumbanian Asian Land Mammal Age, while the Kuldana and Subathu Formations of Pakistan and India are best correlated with the Arshantan Asian Land Mammal Age.

Źródło:

Acta Palaeontologica Polonica; 2012, 57, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 97.

Tytuł:

New Early Cretaceous spalacotheriid symmetrodont mammal from Japan

Autorzy:

Tsubamoto, T
Rougier, G.W.
Isaji, S.
Manabe, M.
Forasiepi, A.M.

Powiązania:

https://bibliotekanauki.pl/articles/22930.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Spalacotheriidae
Japan
Early Cretaceous
Symmetrolestes parvus
mammal
Mammalia
Trechnotheria
new spalacotheriid
paleontology
Tetori Group
spalacotheriid

Opis:

We describe a new spalacotheriid (acute−angled) “symmetrodont” (Mammalia, Trechnotheria), Symmetrolestes parvus gen. et sp. nov., from the Lower Cretaceous, likely Barremian, Kitadani Formation of the Tetori Group, central Japan. The specimen consists of a fragmentary right lower jaw with first incisor and five preserved postcanine teeth (interpreted as p5–m4). Symmetrolestes has acute−angled molariforms with complete shearing surfaces on the para– and protocristids, and relatively tall crowns, features that are referable to Spalacotheriidae. Symmetrolestes is more derived than zhangheotheriids in having complete shearing surfaces, taller crowns, and more complete cingulids. It differs from other spalacotheriids in having fewer molariforms (m1–4), higher number of premolariforms (p1–5), and gradual transition between premolariforms and molariforms. Our cladistic analysis of 29 characters shows Symmetrolestes as the sister group of the remaining Spalacotheriidae. This node is supported by only one character (Bremer support: 1) and therefore not particularly stable. The remaining spalacotheriids are arranged in a fully pectinated tree conforming to the topology of the previous researchers, in which Spalacolestinae occupy an apical position. The combination of the occurrences of a primitive spalacotheriid, Symmetrolestes, in Japan and of Zhangheotheriidae, which is the sister taxon of Spalacotheriidae, in China suggests a possibility for an East Asian origin of Spalacotheriidae, although it implies long ghost lineages for the latest Jurassic to Early Cretaceous East Asian “symmetrodonts”.

Źródło:

Acta Palaeontologica Polonica; 2004, 49, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 98.

Tytuł:

A taxonomic and biogeographic review of the fossil tapirs from Bolivia

Autorzy:

Ferrero, B.S.
Soibelzon, E.
Holanda, E.C.
Gasparini, G.M.
Zurita, A.E.
Mino-Boilini, A.R.

Powiązania:

https://bibliotekanauki.pl/articles/945888.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

taxonomy
biogeography
fossil
tapir
Tapirus tarijensis
Bolivia
Quaternary
South America
paleontology
mammalia
Perissodactyla
Tapiridae
mammal

Opis:

Fossil remains of South American tapirs are often fragmentary and scarce compared with those of other mammals that entered South America during the “Great American Biotic Interchange”. Here, we review and add to the Pleistocene tapir remains from the Tarija Valley (Bolivia), and provide a taxonomic re-evaluation of Tapirus tarijensis. T. tarijensis was a large-sized animal, approximating the size of the living Malaysian T. indicus and the extinct North American T. haysii. The geographical distribution of Pleistocene records of Tapirus in South America indicates that T. tarijensis was the only known species inhabiting the Tarija Valley during this time.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 3; 505-516
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 99.

Tytuł:

Petrosal and cranial vascular system of the early Eocene palaeoryctid mammal Eoryctes melanus from northwestern Wyoming, USA

Autorzy:

Wible, John R.

Powiązania:

https://bibliotekanauki.pl/articles/2216205.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Lipotyphla
Solenodon
entotympanic
facial nerve
frontal diploic vein
piriform fenestra
stapedial artery
tympanohyal
zygoma
Mammalia

Opis:

The petrosal and neighboring bones of the early Eocene palaeoryctid mammal Eoryctes melanus are described in tympanic and endocranial views based on CT scan data of the holotype. A second cranium of E. melanus has fragments of an osseous bulla, which have been interpreted as possibly formed by an independent entotympanic. The CT scans of the holotype reveal that the medial bullar wall is formed by an expanded rostral tympanic process of the petrosal, but the element(s) in the bullar floor remain unknown. The CT scans also allow for a comprehensive reconstruction of the cranial arterial and venous system. The arterial pattern differs from that in early eutherians by the absence of the arteria diploëtica magna and the bifurcation of the end branches of the stapedial artery dorsal to the tympanic roof. The venous pattern includes a large frontal diploic vein arising from the dorsal sagittal sinus on the midline and running through the frontal bone in a canal. Comparisons are made with other palaeoryctids, various Paleogene mammals (pantolestids, leptictids, apternodontids, apatemyids, and cimolestids) and the extant lipotyphlan Solenodon paradoxus. For the last taxon, the structure of the piriform fenestra and associated arteries is detailed. Cranial features support the monophyly of palaeoryctids and suggest possible lipotyphlan affinities.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 203-220
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 100.

Tytuł:

Carnassiform notches improve the functional efficiency of bat molar shearing crests

Autorzy:

Czaplewski, Nicholas J.
Baker, Charles G.

Powiązania:

https://bibliotekanauki.pl/articles/2216220.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Mammalia
Chiroptera
dental morphology
functional morphology
functional design
molars
talonid cests
shearing blades
bio-engineering

Opis:

We surveyed molar surface morphology of bats of 281 extant and extinct species in 5 archaic and 19 extant families using scanning microscopy. We note the occurrence of structural features on talonid crests, the cristid obliqua, postcristid, and entocristid, and their absence in upper molars, even of the same species having them on lowers. We term the structures “carnassiform notches” (CN) for their resemblance to similar features on the carnassial teeth of carnivorans. A CN consists of a small cleft in the edge of a talonid shearing crest accompanied by an adjacent “accessory trough” on the basinward side of the notch. The CN occur in bats with tribosphenic molar morphology and insectivorous or insectivorous–omnivorous dietary habits. Of 19 extant families examined, eight include members that possess lower molars with a CN in at least the cristid obliqua: Megadermatidae, Nycteridae, Mystacinidae, Furipteridae, Thyropteridae, Phyllostomidae, Natalidae, and Vespertilionidae (Murininae and Kerivoulinae only). An extinct genus of Hipposideridae, Vaylatsia, shows CN although extant hipposiderids do not. In extinct families for which lower molar fossils are available, notches were not recognized on the talonids, indicating the condition is not plesiomorphic for bats and probably evolved convergently in different lineages. Where present, the CN or troughs are morphologically consistent within a family, and might serve in some cases as characters supporting phylogenetic analyses and clade diagnoses. CN and accessory troughs probably increase the functional efficiency at sectioning chitin by increasing the effective length of a crest while maintaining the same cusp-to-cusp distance and precise occlusal relationships, and by improving the food-capture area of the shearing blade during occlusion. The accessory troughs provide an immediately adjacent fragment-clearance area. The increased sophistication of this food-processing system might be particularly important in species that must quickly acquire, chew, and swallow their food and resume echolocating in flight. The common ancestor of bats probably did not have CN in its molars, and the presence of CN does not signal carnivory in bats.

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 1; 257-282
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce