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    Wyświetlanie 1-34 z 34
    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
    Artykuł
    Tytuł:
    A new salamander from the late Paleocene-early Eocene of Ukraine
    Autorzy:
    Skutschas, P.P.
    Gubin, Y.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/23369.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    new species
    salamander
    Late Paleocene
    Early Eocene
    Ukraine
    Caudata
    Urodela
    phylogenesis
    Paleocene
    Eocene
    Opis:
    A new neotenic salamander, Seminobatrachus boltyschkensis gen. et sp. nov., is described based on 14 skeletons of late Paleocene–early Eocene age preserved on drill core slabs from the Cherkassy Region, central Ukraine. The new taxon is diagnosed by the following unique combination of characters: dorsal process of premaxilla posteriorly elongate and overlaps frontal; maxilla greatly reduced in size; parietal–squamosal contact absent; vomerine tooth row long and parallel to maxillary arcade; pterygoid has long anterior process; quadrate ossified; marginal and palatal teeth pedicellate; trunk vertebrae amphicoelous, each having a subcentral keel, anterior basapophysis, and spinal nerve foramina; ribs bicipital; carpals and tarsals unossified; and phalangeal formulae of 2−2−3−2 and 2−2−3−4−2 for manus and pes, respectively. Phylogenetic analysis nests S. boltyschkensis within Urodela (i.e., crown−clade salamanders), but its exact phylogenetic position is equivocal, resolving in one of three ways: (1) in an unresolved trichotomy with Salamandra and (Ambystomatidae + (Dicamptodon + Rhyacotriton)) (results obtained in NONA v. 2.0, with the WINCLADA v. 1.00.08 interface; the parsimony ratchet (island hopper) algorithm), (2) as a sister taxon of (Salamandra + (Ambystomatidae + (Dicamptodon + Rhyacotriton))) clade (results obtained in TNT v. 1.1; the implicit enumeration search algorithm) or (3) as a sister taxon of Ambystomatidae (results obtained in PAUP v. 4.0b10; the branch−and−bound search algorithm).
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeomagnetism of Late Cretaceous-Paleocene igneous rocks from the western part of the Antarctic Peninsula (Argentine Islands Archipelago)
    Autorzy:
    Bakhmutov, V.
    Shpyra, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058740.pdf
    Data publikacji:
    2011
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Cretaceous
    Paleocene
    Antarctic Peninsula
    palaeomagnetism
    Opis:
    A collection of 360 oriented samples of igneous rocks from the western part of the Antarctic Peninsula (Argentine Islands Archipelago, Penola Strait area), has yielded well-defined palaeomagnetic directions. Age determinations by various methods showed a Late Cretaceous-Paleocene time interval for the rocks studied. The characteristic remanent magnetisation (ChRM) was isolated by a stepwise thermal demagnetisation mostly in the temperature interval 450-580 degreesC. It is evidently a primary magnetisation. The rocks along the coastline of the western part of the Antarctic Peninsula (AP) were emplaced during the Cretaceous Normal Superchron while the rocks from the islands with reversed polarity are of Paleocene. New Cretaceous (112-85 Ma) and Paleocene (60 Ma) palaeomagnetic poles for the passive continental margin of the Antarctic Peninsula fit well with a synthetic East Antarctica apparent polar wander path and confirms that the AP did not undergo latitudinal displacement for the last 100 Ma. The palaeomagnetic pole for 60 Ma shows a slight shift from palaeopoles obtained for the South Shetland Islands which implies that the South Shetland block is characterized by own tectonic evolution and probable anticlockwise rotation during the Paleocene.
    Źródło:
    Geological Quarterly; 2011, 55, 4; 285-300
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sclerobionts on organic substrates from the Late Paleocene Chehel-Kaman Formation, Kopet-Dagh Basin, NE Iran
    Autorzy:
    Salahi, A.
    El Hedeny, M.
    Vinn, O.
    Rashwan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/973717.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    sclerobionts
    Late Paleocene
    Chehel-Kaman Formation
    Iran
    Opis:
    Molluscs (oysters and gastropods) of the Late Paleocene Chehel-Kaman Formation, Kopet-Dagh Basin NE Iran were significantly colonized by sclerobionts. The largest area of the shells studied is covered by various borings. The diversity of macro-bioeroding ichnotaxa is rather high, including Gastrochaenolites Leymerie 1842; Maeandropolydora Voigt, 1965; Trypanites Mägdefrau, 1932; Talpina von Hagenow, 1840, and possibly Entobia Bronn, 1837. Some slightly conical borings penetrating the shells could belong to predatory tracemakers of Oichnus Bromley, 1981. Encrusters include calcareous polychaetes, cyclostome and cheilostome bryozoans, foraminifera and oysters. Calcareous sabellids [i.e. Glomerula serpentina (Goldfuss, 1831)] and serpulids are equally common sclerobionts in the association. Bryozoans cover a slightly larger area of the substrate than the calcareous polychaetes, while encrusting oysters are subordinate. The majority of fossils in the hard-substrate community studied belong to suspension feeders. Sclerobionts are typical of the shallow-marine environment, commonly in warm water. The present study is the first attempt to record the occurrence and diversity of epi- and endobionts in the organic substrates, present in the topmost part of the Late Paleocene Chehel-Kaman Formation, Kopet-Dagh Basin, NE Iran.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2018, 88, 3; 291-301
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Foraminiferal stratigraphy and palaeobathymetry of Paleocene-lowermost Oligocene deposits (Vezhany and Monastyrets nappes, Ukrainian Carpathians)
    Autorzy:
    Hnylko, S.
    Hnylko, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060194.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Ukrainian Carpathians
    Paleocene-Eocene
    foraminifera
    biostratigraphy
    palaeobathymetry
    Opis:
    Mainly pelagic/hemipelagic deposits of the Vezhany Nappe (Paleocene-Lowermost Oligocene Metova Formation with a high content of planktonic foraminifera) and typical flysch deposits of the Monastyrets Nappe (Paleocene-Eocene Sushmanets Formation with common agglutinated foraminifera as well as the Eocene Drahovo Formation), of the southwestern inner part of the Ukrainian Carpathians have been studied. The Parvularugoglobigerina eugubina Zone (Lower Danian), Acarinina acarinata Zone (Upper Thanetian), Morozovella subbotinae Zone and Morozovella aragonensis Zone (Ypresian), Acarinina bullbrooki Zone and Acarinina rotundimarginata Zone (Lutetian), Subbotina corpulenta Zone and Subbotina vialovi Zone (Upper Priabonian – Lower Rupelian) based on planktonic foraminifera as well as the Rzehakina fissistomata sensu lato Zone (Paleocene), Glomospira charoides–Recurvoides smugarensis Zone (Ypresian), and an assemblage with Haplophragmoides parvulus (latest Mid Eocene-early Late Eocene) based on agglutinated foraminifera have been identified in these deposits. The deep-water agglutinated foraminifera of the “Rzehakina”, “Rhabdammina” and “Paratrochamminoides” assemblages found in the typical flysch deposits of the Sushmanets Formation indicate lower slope to abyssal environments below the CCD. The generic composition and morphological features of planktonic and benthic foraminifera recovered from marls of the Metova Formation suggest pelagic/hemipelagic conditions at bathyal depths above the foraminiferal lysocline.
    Źródło:
    Geological Quarterly; 2016, 60, 1; 77--105
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ichnology of Upper Cretaceous–lower Palaeogene deep-sea deposits in the Haymana Basin of Central Anatolia
    Autorzy:
    Demircan, Huriye
    Görmüş, Muhittin
    Powiązania:
    https://bibliotekanauki.pl/articles/1836251.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    trace fossils
    benthic foraminifera
    Campanian
    Paleocene
    Turkey
    Opis:
    Upper Cretaceous to lower Palaeogene carbonate and siliciclastic deposits that crop out widely in the Haymana and Polatlı districts (Ankara Province) of the Haymana Basin (Central Anatolia) are rich in larger benthic foraminifera, various macrofossils and ichnofossils. The ichnofossils of the Haymana and Yeşilyurt formations were studied at five localities. The Upper Cretaceous siliciclastics of the Haymana Formation contain moderately diverse trace fossils, belonging to the deep-sea Nereites ichnofacies. The Paleocene siliciclastic and carbonate deposits of the Yeşilyurt Formation comprise similar trace fossils, which do not show significant changes in comparison to the Haymana Formation. This indicates that the K-Pg boundary extinction event did not affect the ichnofauna with any longer consequences. The Upper Cretaceous coarser, siliciclastic deposits of the Haymana and Beyobası formations are rich in shallow-marine, larger benthic foraminifera, including species of Orbitoides, Omphalocyclus, Siderolites, Hellenocyclina, and Loftusia, whereas fine siliciclastic deposits contain abundant planktonic, open-marine foraminifera, such as Globotruncana and Heterohelix. Palaeogene siliciclastic to carbonate deposits of the Kartal, Yeşilyurt and Çaldağ formations are rich in the larger, benthic foraminifera Nummulites, Discocyclina, Assilina and Alveolina. The larger foraminifers have been redeposited from nearby, shallow-marine parts of the basin.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2020, 90, 4; 463-493
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new agglutinated foraminiferal species (Arenoturrispirillina waskowskae sp. nov.) from the Danian of Contessa, Italy
    Autorzy:
    Hikmahtiar, Syouma
    Kaminski, Michael A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2172912.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    agglutinated foraminifera
    taxonomy
    Paleocene
    Umbria-Marche Basin
    Italy
    Opis:
    This paper describes a new Paleogene deep-water agglutinated foraminifera from the Contessa Highway Section, Umbria-Marche Basin, Italy. The new species Arenoturrispirillina waskowskae is characterised by its predominently high trochospiral coiling, which distinguishes it from the genus Glomospira. The new species is also found in the Polish Carpathians.
    Źródło:
    Geology, Geophysics and Environment; 2022, 48, 4; 405--411
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiolarian and agglutinated foraminiferal biostratigraphy of the Paleogene deep-water deposits on the northern margin of the Carpathian Tethys (Skole Unit)
    Autorzy:
    Rajchel, J. M.
    Barwicz-Piskorz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060627.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    radiolaria
    foraminifera
    Paleocene
    Eocene
    Skole unit
    Outer Carpathians
    Opis:
    Radiolarian and agglutinated foraminiferal fauna within upper deposits of the Skole Unit of the Polish Flysch Outer Carpathians occur in the Variegated Shale and Hieroglyphic formations of Paleocene and Eocene age. About 70 radiolarian and 50 foraminiferal species have been identified and their stratigraphic distribution determined using both regional and local biozonations. Five radiolarian zones: the Bekoma bidartensis Interval Zone, the Buryella clinata Interval Zone, the Phormocyrtis striata striata Interval Zone, the Theocotyle cryptocephala Interval Zone and the Dictyoprora mongolfieri Interval Zone in the lower Eocene and in the lower part of the middle Eocene have been distinguished. In the upper part of the middle Eocene and in the uper Eocene the abundance of radiolarians decreases and their age assignment has not been possible. Five foraminiferal zones have been distinguished and correlated with radiolarian zones based on co-occurrence of both Protista groups in the deposits investigated. These are: the Rzehakina fissistomata Zone, the Saccamminoides carpathicus Zone, the Reticulophragmium amplectens Zone, the Ammodiscus latus Zone and the Cyclammina rotundidorsata Zone covering the time span from upper Paleocene to upper Eocene.
    Źródło:
    Geological Quarterly; 2012, 56, 1; 1-24
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First shark record (Chondrichthyes, Elasmobranchii) from the Paleogene of Spitsbergen, Svalbard
    Autorzy:
    Mörs, Thomas
    Hagström, Jonas
    Kaim, Andrzej
    Hryniewicz, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2041897.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Paleocene
    Grumantbyen Formation
    sand tiger shark
    tooth morphology
    Źródło:
    Polish Polar Research; 2019, 40, 2; 121-127
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth dynamics and body size evolution of South American long-necked chelid turtles: A bone histology approach
    Autorzy:
    Pereyra, M.E.
    Bona, P.
    Cerda, I.A.
    Jannello, J.M.
    De La Fuente, M.S.
    Desantolo, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082231.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Testudines
    Chelidae
    growth rate
    body size
    paleohistology
    ontogeny
    Paleocene
    Argentina
    Opis:
    Among turtles, cases of “gigantism” occur mostly in pleurodiran Pelomedusoides and cryptodirans, but are infrequent among pleurodiran chelids, which are mostly small-medium sized turtles. Yaminuechelys spp. are extinct South American long-necked chelids (from the Late Cretaceous–early Paleocene of Patagonia, Argentina) with caparaces almost three times larger than their extant sister taxon, Hydromedusa tectifera. Since evolutionary changes in size can be analyzed based on growth dynamics, we studied growth strategies from an osteohistological point of view. We sampled both extinct (Yaminuechelys maior) and extant (H. tectifera) species, in order to test hypotheses related to the mechanisms involved in the macroevolution of size within this clade. For this purpose, thin sections of long bone (humerus and femur) shafts of specimens of different ontogenetic stages for these species were prepared. The osteohistological study reveals a similar growth dynamic in both taxa, with a poorly vascularized cortex dominated by parallel- fibered bone and interrupted by lines of arrested growth (LAGs). The huge body size of Y. maior appears to be a consequence of the prolongation of the growth phase, suggesting that it had a longer lifespan than H. tectifera, allowing to reach greater sizes. In this way, and assuming that there is no displacement at the beginning of development (e.g., a delay in the earliest stages of growth) in H. tectifera, the acquisition of a large size in Yaminuechelys would be explained by hypomorphosis of the former or hypermorphosis of the latter, depending on the reconstruction of the ancestral condition of this clade.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 3; 535-545
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anatomy and phylogeny of the gavialoid crocodylian Eosuchus lerichei from the Paleocene of Europe
    Autorzy:
    Delfino, M
    Piras, P.
    Smith, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/21197.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    phylogenesis
    Crocodylia
    Paleocene
    Gavialidae
    anatomy
    osmoregulation
    Europe
    Eosuchus lerichei
    paleontology
    Opis:
    Originally designated by Dollo in 1907, the holotype of Eosuchus lerichei has never been carefully described but simply cited and compared in a number of papers. This work is an attempt to fill this gap and to place this taxon in a cladistic phylogenetic context. E. lerichei can be considered a valid basal gavialoid from late Paleocene of North Western Europe, sharing the presence of extremely enlarged foramina aerea on quadrates with the coeval Eosuchus minor from eastern North America (formerly described as Gavialis minor). These two species can be considered sister taxa and, for priority reason, they should be both ascribed to genus Eosuchus. The results of the cladistic analysis show that the European species possess characters that can be considered as slightly derived if compared to those of its American relative, suggesting an eastward dispersion from North America before the Paleocene–Eocene boundary and before the full opening of the Atlantic Ocean or local evolution from a basal gavialoid stock similar to E. minor. Both species of Eosuchus come from marine outcrops and represent a further evidence for the salt−water tolerance of the earliest stages of Gavialoidea evolutionary history. Despite the present endemicity of the only living gharial, Gavialis gangeticus, the historical biogeography of gavialoids shows a lost global distribution and reveals several transoceanic dispersals.
    Źródło:
    Acta Palaeontologica Polonica; 2005, 50, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Paleogene of the Magura Nappe adjacent to the Pieniny Klippen Belt between Szczawnica and Krościenko (Outer Carpathians, Poland)
    Autorzy:
    Golonka, J.
    Waśkowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/184617.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Magura Nappe
    Krynica zone
    peri-Pieniny zone
    Paleocene-Eocene
    lithostratigraphy
    foraminifera
    Opis:
    The present authors investigated the Paleogene deposits of the internal zone of the Magura Basin known as the Krynica Subunit or Krynica zone in Poland. These deposits crop out in the peri-Pieniny zone, in the area between Szczawnica and Krościenko. The oldest flysch deposits belong to the Paleocene - Lower Eocene Szczawnica Formation. This formation is covered by thin-bedded turbidites of the Eocene Zarzecze Formation locally with intercalations of the thick-bedded sandstones of the Krynica Member and Łęcko-type marls. The youngest rocks in this area belong to the Eocene-Oligocene Magura Formation. The Zarzecze Formation occupies a large part of the Krynica zone of the Magura Nappe border structure. Some deposits previously distinguished as the Szczawnica Formation were transferred to the Zarzecze Formation. The foraminiferal assemblages confirm the Eocene age of these deposits.
    Źródło:
    Geology, Geophysics and Environment; 2014, 40, 4; 359-376
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Structural inversion of the Pomeranian and Kuiavian segments of the Mid-Polish Trough-lateral variations in timing and structural style
    Autorzy:
    Krzywiec, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058938.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Mid-Polish Trough
    Late Cretaceous
    Paleocene-Eocene
    Permo–Mesozoic
    basin inversion
    salt tectonics
    Opis:
    Seven high-quality reflection-seismic lines, calibrated by wells, were interpreted in an effort to assess the timing of inversion and the structural configuration of the Pomeranian and Kuiavian segments of theMid-Polish Trough. Seismostratigraphic analyses of the Upper Cretaceous successions imaged by these seismic lines in the NE and SW marginal troughs of the Mid-Polish Swell document important along-strike stratigraphic and structural changes. Thickness variations of the Upper Cretaceous series, combined with the development of erosional unconformities and associated tectonic deformations indicate that inversion movements commenced during the late Turonian and intermittently persisted into the Maastrichtian and Paleocene. Earliest inversion movements were focused on the margins of the Mid-Polish Trough where Mesozoic sequences are decoupled from the sub-Zechstein series by Zechstein salts. Whereas the NE margin of theMid-Polish Trough is devoid of compressionally reactivated salt structures, its SWmargin is characterized by strong inversion- related salt tectonics. Progressive inversion of the axial parts of the Mid-Polish Trough was accompanied by uplift of its pre-Zechstein floor to and above the level of flanking, non-inverted areas, and by deep truncation ofMesozoic series across the culmination of the evolving Mid-Polish Swell. Inversion movements ceased towards the end of the Paleocene, as evidenced by the burial of the Mid-Polish Swell beneath essentially flat lying Eocene and younger series. Turonian-Paleocene inversion of the Mid-Polish Trough is coeval with the inversion of the Bohemian Massif, the North German Basin and the Sorgenfrei-Tornquist Zone. Inversion of the Mid-Polish Trough is considered to have been controlled mainly by compressional intraplate stresses that built up in the Carpathian foreland during the collision of the Inner Carpathian orogenic wedge with the European passivemargin, attesting to their increasing mechanical coupling, commencing during the Turonian. These stresses relaxed, however, with the end-Paleocene onset of imbrication of the Outer Carpathian domain, reflecting decoupling of the Carpathian orogenic wedge from its foreland.
    Źródło:
    Geological Quarterly; 2006, 50, 1; 151-168
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New data on the anatomy and relationships of the Paleocene crocodylian Akanthosuchus langstoni
    Autorzy:
    Hill, R.V.
    Lucas, S.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/20775.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Akanthosuchus langstoni
    Alligatoroidea
    Crocodylia
    holotype
    Paleocene
    anatomy
    dwarfism
    paleontology
    phylogenetic relationship
    phylogenetic analysis
    Opis:
    The phylogenetic relationships of the Paleocene crocodylian Akanthosuchus langstoni are assessed using published data matrices and morphological data from the holotype and referred specimens. Cladistic analyses indicate that Akanthosuchus is unequivocally nested within Alligatoroidea. Weak support from a majority rule consensus tree indicates that Akanthosuchus may be more closely allied with alligatorines than with caimanines, but in the strict consensus tree these relationships remain ambiguous. There is no evidence from phylogenetic analyses to support the hypothesis that Akanthosuchus represents the postcrania of the Paleocene crocodylians Navajosuchus or Ceratosuchus. Growth marks observed in histological sections of osteoderms of the holotype of Akanthosuchus langstoni indicate that it was at least eight years old at the time of death. Although the individual may not have been fully mature at the time of death, lineage dwarfism cannot be ruled out as a possible reason for its relatively small size.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    New earliest Tiffanian [Late Paleocene] mammals from Cochrane 2, Southwestern Alberta, Canada
    Autorzy:
    Scott, C S
    Fox, R.C.
    Youzwyshyn, G.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/21452.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Paleocene
    Late Paleocene
    Eutheria
    mammal
    Canada
    new combination
    Litomylus grandaletes
    Alberta
    Ptilodus gnomus
    Baiotomeus russelli
    Paleotomus junior
    fossil
    Thryptacodon orthogonius
    Paskapoo Formation
    Bessoecetor septentrionalis
    Pararyctes rutherfordi
    new species
    paleontology
    Multituberculata
    Opis:
    New mammalian fossils at Cochrane 2, Paskapoo Formation, Alberta, Canada, document five new species and two new combinations: Ptilodus gnomus sp.nov.and Baiotomeus russelli sp.nov.(Multituberculata), Thryptacodon orthogonius comb.nov.and Litomylus grandaletes sp.nov.(“Condylarthra”), Pararyctes rutherfordi sp.nov., Bessoecetor septentrionalis comb.nov., and Paleotomus junior sp.nov.(Eutheria incertae sedis).These new taxa supplement a taxonomically diverse Cochrane 2 local fauna, representing one of the most species rich Paleocene mammalian localities in the world. An earliest Tiffanian age is estimated for the locality based on the presence of the index taxa Plesiadapis praecursor, Nannodectes intermedius, and Ectocion collinus.The Cochrane 2 local fauna fails to demonstrate a decrease in species number relative to those of late Torrejonian localities from the United States, as would be predicted by current paleoclimate scenarios; the rarity of earliest Tiffanian localities in North America suggests sampling error as a partial explanation for the apparent incongruity.
    Źródło:
    Acta Palaeontologica Polonica; 2002, 47, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New data on the Paleocene monotreme Monotrematum sudamericanum, and the convergent evolution of triangulate molars
    Autorzy:
    Pascual, R
    Goin, F.J.
    Balarino, L.
    Udrizar Sauthier, D.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21782.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Monotremata
    molar
    Paleocene
    Gondwana
    triangulate molar
    Monotrematum sudamericanum
    monotreme
    molar structure
    evolution
    Patagonia
    paleontology
    Opis:
    We describe an additional fragmentary upper molar and the first lower molar known of Monotrematum sudamericanum, the oldest Cenozoic (Paleocene) monotreme. Comparisons suggest that the monotreme evolution passed through a stage in which their molars were “pseudo−triangulate”, without a true trigonid, and that the monotreme pseudo−triangulate pattern did not arise through rotation of the primary molar cusps. Monotreme lower molars lack a talonid, and consequently there is no basin with facets produced by the wearing action of a “protocone”; a cristid obliqua connecting the “talonid“ to the “trigonid” is also absent. We hypothesize that acquisition of the molar pattern seen in Steropodon galmani (Early Cretaceous, Albian) followed a process similar to that already postulated for docodonts (Docodon in Laurasia, Reigitherium in the South American sector of Gondwana) and, probably, in the gondwanathere Ferugliotherium.
    Źródło:
    Acta Palaeontologica Polonica; 2002, 47, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First tillodont from India: Additional evidence for an early Eocene faunal connection between Europe and India?
    Autorzy:
    Rose, K D
    Rana, R.S.
    Sahni, A.
    Kumar, K.
    Singh, L.
    Smith, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/22886.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    tillodont
    India
    Europe
    Eocene
    Paleocene
    faunal connection
    Cenozoic
    mammal
    Ypresian
    anthracobunid
    lagomorph
    fauna
    Opis:
    Vastan Lignite Mine in southeastern Gujarat, India, produces the oldest known Cenozoic land−mammals and the only early Eocene continental vertebrate fauna known from India (e.g., Bajpai et al. 2005; Rana et al. 2005, 2008; Rose et al. 2006, 2008, 2009; Smith et al. 2007; Rage et al. 2008). The fauna comes from the Cambay Shale Formation and has been dated as middle Ypresian (~52 Ma, early Cuisian) based on a common nummulitid foraminiferan from about 15 m above the vertebrate−producing layer (Sahni et al. 2006; Rana et al. 2008). However, a recent study of dinoflagellate cysts from the section suggests that the deposits may be as old as 54–55 Ma (Garg et al. 2008). Although some elements of the fauna, such as anthracobunids and lagomorphs, have Asian affinities, a surprising number of taxa among the snakes, bats, insectivores, primates, rodents, and artiodactyls appear to be most closely related to early Eocene European or North American taxa. This may simply reflect the poor state of knowledge of contemporary south Asian vertebrate faunas; alternatively, it might be evidence of previously unsuspected early Eocene faunal exchange between Europe and southwest Asia. We report here two teeth of a tillodont from Vastan Mine, which constitute the first record of the mammalian order Tillodontia known from India. Despite the much greater generic diversity of tillodonts in Asia than elsewhere, the Vastan tillodont shows clear affinities with Euramerican esthonychines.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 2; 351-355
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dental and tarsal morphology of the European Paleocene-Eocene 'condylarth' mammal Microhyus
    Autorzy:
    Tabuce, R
    Antunes, M.T.
    Smith, R.
    Smith, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/23184.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Paleocene
    locality
    mammal
    Eocene
    Belgium
    Microhyus musculus
    postcranial remains
    morphology
    dental remains
    Europe
    paleontology
    Opis:
    New dental and postcranial remains of the alleged louisinine hyopsodontid “condylarth” Microhyus from the European Paleocene/Eocene transition are described, and prompt a reevaluation of the genus. New specimens belonging to Microhyus musculus from Dormaal (MP7, Belgium) provide the first evidence of the lower dentition of the type species. We describe M. musculus? from Pourcy (MP7, France) and cf. Microhyussp. from Berru (MP6a, France). A rich original assemblage of M. reisi from Silveirinha (MP7, Portugal) allows a detailed description of the morphological dental variation within that species. Well−preserved astragali and calcanei from Silveirinha can be confidently attributed to Microhyus reisi. Functional analysis of these elements suggests that Microhyus was a terrestrial mammal capable of rapid running or jumping. The pedal morphology of Microhyus is very similar to that of Paschatherium. These louisinines share some derived characters with the hyopsodontids Apheliscus and Haplomylus (e.g., the occurrence of a cotylar fossa on the astragalus) but they differ from Hyopsodus. Therefore, in view of the pedal morphology alone, the hyopsodontids may be polyphyletic. Given the dental similarities between Microhyus and the early representatives of the order Macroscelidea, we compared the tarsal morphology of louisinines with that of modern macroscelidids (Paleogene tarsal remains are currently unknown for this group). Macroscelidids and louisinines present some similarities in their astragalar morphology; however, the macroscelidid astragalus appears to be too specialized to be compared with that of Microhyus and Paschatherium.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    The Ropianka Formation of the Bystrica Zone (Magura Nappe, Outer Carpathians : proposal for a new reference section in northwestern Orava
    Autorzy:
    Teťák, F.
    Cieszkowski, M.
    Golonka, J.
    Waśkowska, A.
    Szczęch, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/191696.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Outer Carpathians
    lithostratigraphy
    Late Cretaceous–Paleocene
    Magura Nappe
    Bystrica Zone
    Ropianka Formation
    Szczawina Member
    Orava
    Opis:
    The thin- and medium-bedded, turbiditic deposits that are exposed in the Bystrica Zone of the Magura Nappe in the Slovak Orava region are the subject of this study. On the basis of lithological features as well as age and stratigraphic position, they are assigned to the Ropianka Formation. The very well exposed rocks of this formation, recognized in the Biela Farma profile in the Slovak part of the northwestern Orava region, are compared with analogous deposits in the Polish Orava and the Beskid Wysoki Mountains. Lithological and biostratigraphical documentation of the Ropianka Formation is presented. This documentation allowed the determination of the age of the rocks studied. Abundant and taxonomically diverse foraminiferal assemblages of agglutinated, benthonic and occasional planktonic forms indicate a Middle Paleocene age for the upper part of the Ropianka Fm. A new stratigraphic position for the Szczawina Sandstone, considered to be a member of the Ropianka Fm, is proposed. The lithostratigraphy of the Ropianka Fm in the Magura Nappe in Poland, Slovakia and the Czech Republic requires further investigation, including the establishment of new type and reference sections. The large outcrop at Biela Farma should be taken into consideration as a potential reference section. Studies of the new sections will lead to a new monographic elaboration of the Ropianka Fm in Poland, Slovakia and the Czech Republic.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2017, 87, 3; 259-274
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Early Paleogene planktic foraminifera in thin-sections : an experiment on isolated specimens from the Fore-Magura Thrust Sheet (Polish Outer Carpathians)
    Autorzy:
    Baliniak, W.
    Malata, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060605.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Paleocene-Middle Eocene planktic foraminifera
    random thin-sections
    experiment
    isolated specimens
    Fore-Magura Thrust Sheet
    Opis:
    This paper describes results of an experiment aimed mainly at obtaining random thin-sections of isolated specimens of planktic foraminifera determined to a species level. Twenty species of uppermost Paleocene-Middle Eocene planktic foraminifera from pelagic variegated marls of the Fore-Magura Thrust Sheet have been chosen for this experiment. These planktic foraminifera belong to the genera Chiloguembelina, Turborotalia, Acarinina, Morozovella, Muricoglobigerina, Subbotina and Parasubbotina. Their SEM images, stereomicroscope photos of isolated specimens, and the experimental thin-sections along with their systematics and stratigraphic ranges are presented.
    Źródło:
    Geological Quarterly; 2017, 61, 3; 655--681
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The rotaliid foraminiferan Escornebovina identified in the Carpathian Paleocene
    Autorzy:
    Szczechura, J
    Powiązania:
    https://bibliotekanauki.pl/articles/21412.pdf
    Data publikacji:
    1992
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Paleocene
    Escornebovina
    Pseudopatellina plana
    Escornebovina cuvillieri
    Polska
    Pulvinulina trochiformis
    Oligocene
    Escornebovina trochiformis
    Eponides binominatus
    paleontology
    Źródło:
    Acta Palaeontologica Polonica; 1992, 37, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enamel microstructure of the Late Cretaceous multituberculate mammal Kogaionon
    Autorzy:
    Fosse, G
    Radulescu, C.
    Samson, P.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/22612.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Hainina
    Paleocene
    mammal
    Late Cretaceous
    Cretaceous
    Romania
    tooth
    microstructure
    multituberculate
    Taeniolabis
    Kogaionon
    enamel microstructure
    Europe
    Źródło:
    Acta Palaeontologica Polonica; 2001, 46, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new dyrosaurid crocodyliform from the Paleocene of Morocco and a phylogenetic analysis of Dyrosauridae
    Autorzy:
    Jouve, S
    Iarochene, M.
    Bouya, B.
    Amaghzaz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/20369.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Ouled Abdoun Basin
    Paleocene
    dyrosaurid crocodyliform
    Dyrosauridae
    Crocodyliformes
    Arambourgisuchus khouribgaensis
    new species
    new genus
    Morocco
    paleontology
    Opis:
    A new genus and species belonging to Dyrosauridae, Arambourgisuchus khouribgaensis, from the Thanetian (Palaeocene) of Morocco, is erected. Two more or less complete skulls and three mandibular fragments enable a reconstruction of the anatomical characteristics of this species. Dyrosaurid systematics is mainly based on mandibular characters. The comparison of this new material with several dyrosaurid species previously known provides new systematic data for this group. The width of the interfenestral bar, the shape and development of the occipital tuberosities and the shape of the supraoccipital and the basioccipital are of particular importance. A phylogenetic analysis of the dyrosaurids provides an outline of the relationships between the best known species. Chenanisuchus lateroculi is the most primitive dyrosaurid. Sokotosuchus ianwilsoni and Phosphatosaurus gavialoidesform a clade, more closely related to other dyrosaurids than to Chenanisuchus lateroculi. The relationships between Arambourgisuchus, Rhabdognathus, Congosaurus, and Hyposaurus are unclear, and the two latter taxa remain too poorly known to provide an uncontested phylogenetic result. The dyrosaurids are known from nearly all continents. The phylogenetic results suggest a North African range for basal members, and the wide distribution of Rhabdognathus and Hyposaurus confirms the possibility of transoceanic dispersal of these taxa. Unfortunately, many dyrosaurids are insufficiently known to be included in the analysis, and the present analysis considers mainly African forms. A better knowledge and the inclusion of other taxa from other geographic regions should significantly improve and modify the hypothesis.
    Źródło:
    Acta Palaeontologica Polonica; 2005, 50, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An unusual early primate from the Paleocene Paskapoo Formation, Alberta, Canada
    Autorzy:
    Fox, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/23216.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Alberta
    Canada
    Paleocene
    Paskapoo Formation
    Plesiadapiformes
    primate
    Primates
    new plesiadapiform primate
    Phoxomylus puncticuspis
    plesiadapiform primate
    Earlu Tiffanian
    Opis:
    A new plesiadapiform primate, Phoxomylus puncticuspis gen. et sp. nov., is described based on an isolated but well−preserved upper molar from the early Tiffanian (late Paleocene) Cochrane 2 locality, southwestern Alberta, Canada. Although possessing a robust postprotoconal fold, an unambiguous synapomorphy of primates, Phoxomylus differs from other plesiadapiforms in its retention of primitive molar features, including acutely pointed major cusps and sharp crests, deep trigon basin, and lack of the bunodont coronal specializations that purportedly marked the transition from insectivorous non−primate ancestors to omnivorous/frugivorous basal primates. Coronal features of the holotype of P. puncticuspis imply that during mastication the mandible was adducted in a near−vertical plane, with little capacity for the transverse movement that is already seen in molar morphology of the earliest and most basal plesiadapiform, Purgatorius. Instead, molar morphology in P. puncticuspis implies emphasis on vertical piercing and shearing, specializations for insectivory unlikely to have been derived via reversal from plesiadapiform ancestors having more bunodont molars adapted for omnivory/frugivory. If that is the case, a long “ghost lineage” must link P. puncticuspis to other, basal plesiadapiforms that have yet to be discovered but that had not yet evolved omnivorous adaptations of the dentition.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phanerozoic paleoenvironment and paleolithofacies maps : Cenozoic
    Mapy paleośrodowiska i paleolitofacji fanerozoiku : kenozoik
    Autorzy:
    Golonka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/183799.pdf
    Data publikacji:
    2009
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Oligocene
    miocen
    paleocen
    eocen
    oligocen
    pliocen
    tektonika płyt litosfery
    paleogeografia
    Paleocene
    Eocene
    Miocene
    Pliocene
    plate tectonics
    paleogeography
    Opis:
    The paper presents the detailed plate tectonic, paleogeographic, paleoenvironment and plaeolithofacies maps for seven Cenozoic time intervals. Thirty five maps, generated using PLATES and PALEOMAP programs, contain information about plate tectonics, paleoenvironment, and paleolithofacies during Paleocene, Eocene, Oligocene, Miocene and Pliocene, time slices. The spatial reconstruction of basin architectures during their origin, expansion, closure and inversion as well as the dynamic of intrabasinal ridges were obtained by palinspastic modeling. This modeling utilized paleomagnetic data and stratigraphic-facies analysis of basins and ridges. Information contained within global and regional papers were selected and posted on the maps. The detailed paleoenvironment and plaeolithofacies zones were distinguished within the basins. The paleogeographic maps illustrate the geodynamic evolution of Earth from Late Cretaceous to Neogene, spreading and origin of new oceans, oceans closing, collisions, continents accretion and origin of new supercontinents.
    Artykuł przedstawia szczegółowe mapy paleogeograficzne dla siedmiu przedziałów czasowych w obrębie kenozoiku. Trzydzieści pięć map, skonstruowanych przy użyciu programów PLATES i PALEOMAP, zawiera informacje dotyczące tektoniki płyt, paleośrodowiska i paleolitofacji w czasie paleocenu, eocenu, oligocenu, miocenu i pliocenu. Przestrzenną rekonstrukcję architektury basenów w okresie ich powstawania, ekspansji, zamykania i inwersji oraz analizę dynamiki grzbietów śródbasenowych uzyskano, wykonując modelowanie palinspastyczne, przy uwzględnieniu badań paleomagnetycznych oraz analizy stratygraficzno-facjalnej basenów i rozdzielających je grzbietów. Informacje zawarte w szeregu globalnych i regionalnych prac zostały wyselekcjonowane i naniesione na mapy. W obrębie basenów wydzielono poszczególne strefy paleośrodowiskowe i paleolitofacjalne. Mapy paleogeograficzne ilustrują geodynamiczną ewolucję Ziemi od późnej kredy po neogen, rozrost (spreding) i tworzenie się oceanów, zamykanie się oceanów, kolizje, łączenie się kontynentów i tworzenie się nowych superkontynentów.
    Źródło:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 4; 507-587
    0138-0974
    Pojawia się w:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Puercan (early Paleocene) hyopsodontid “condylarth” from New Mexico
    Autorzy:
    Williamson, T.E.
    Weil, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/20192.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Puercan
    Paleocene
    hyopsodontid
    New Mexico
    Mammalia
    Condylartha
    Hyopsodontidae
    Nacimiento Formation
    paleontology
    tooth
    fauna
    San Juan basin
    Chacomylus sladei
    Opis:
    Isolated cheek teeth from the late Puercan (early Paleocene) Split Lip Flats local fauna, from the head of Willow Wash, Nacimiento Formation, San Juan Basin, represent a new genus and species of hyopsodontid “condylarth”, Chacomylus sladei. The teeth are small, bunodont, and are remarkable for the enlargement of the protocone, pronounced exodaenodonty, and high degree of attritional wear caused by transverse shearing or grinding. Although C. sladei bears a superficial resemblance to the apheliscine apheliscid Gingerichia, a preliminary phylogenetic analysis confirms that it is a hyopsodontid, closely related to the Puercan hyopsodontids Valenia wilsoni and Litomylus orthronepius.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geological characterisation of the Krynica Subunit in the vicinity of Krościenko on the Dunajec river (Magura Nappe, Outer Flysch Carpathians)
    Charakterystyka geologiczna podjednostki krynickiej w okolicach Krościenka nad Dunajcem (płaszczowina magurska, zewnętrzne Karpaty fliszowe)
    Autorzy:
    Chrustek, M.
    Golonka, J.
    Janeczko, A.
    Stachyrak, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/184009.pdf
    Data publikacji:
    2005
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    płaszczowina magurska
    podjednostka krynicka
    paleocen
    dolny i środkowy eocen
    litostratygrafia
    tektonika
    Magura Nappe
    Krynica Subunit
    Paleocene
    Lower and Middle Eocene
    lithostratigraphy
    tectonics
    Opis:
    The aim of this work is to present geological structure of the Krynica Subunit of the Magura Nappe in southern part of the Gorce and Beskid Sądecki Mountains and along the Pieniny Klippen Belt (PKB). Formal lithostratigraphic units were distinguished on the basis of mapping. The lithostratigraphic units are the age of Middle Paleocene - Middle Eocene age. Flysch deposits were classified as the Szczawnica Formation with the Życzanów Member, Zarzecze Formation and Piwniczna Member of the Magura Formation in the investigated area. Strike-slip faults and faulted formations complicate the geological structure of the described region. The creation some of these faults is connected with andesite intrusions. Strong faulted strata occurs in the southern part of the region along the overthrust of the Pieniny Klippen Belt on the Magura Nappe. The contact line between the Pieniny Klippen Belt and Paleogene of the Magura Nappe is heterogeneous. The evidences of it are outcrops of klippen, which occur within the Szczawnica Formation and the Zarzecze Formation
    Główny założeniem niniejszej pracy jest zaprezentowanie budowy geologicznej podjednostki krynickiej płaszczowiny magurskiej w południowej części Gorców i Beskidu Sądeckiego oraz na kontakcie z pienińskim pasem skałkowym. Wydzielone na podstawie badań kartograficznych formalne jednostki litostratygraficzne obejmują osady od środkowego paleocenu do środkowego eocenu. Na badanym obszarze osady fliszowe zostały sklasyfikowane jako formacja szczawnicka z ogniwem z Życzanowa, formacja z Zarzecza oraz ogniwo piaskowców z Piwnicznej formacji magurskiej. Budowę geologiczną opisywanego obszaru komplikują liczne uskoki o charakterze przesuwczym oraz sfałdowane utwory fliszowe. Powstanie części tych uskoków jest związane z intruzjami andezytowymi. Mocno sfałdowane utwory występują w południowej części obszaru wzdłuż nasunięcia pienińskiego pasa skałkowego na płaszczowinę magurską. Linia kontaktu pasa skałkowego z paleogenem magurskim nie jest jednolita. Świadczą o tym wychodnie skałek w obrębie utworów formacji szczawnickiej i formacji z Zarzecza
    Źródło:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2005, 31, 1; 127-144
    0138-0974
    Pojawia się w:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Danian echinoid assemblage from the Greensand in the Kazimierz Dolny area, central Poland: taxonomy, taphonomy and sedimentological implications
    Autorzy:
    Machalski, M.
    Jagt, J. W. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/138924.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    echinodermata
    preservation
    ichnology
    Arachnostega
    planolites
    Paleocene
    Middle Vistula River section
    Central Europe
    szkarłupnie
    ochrona
    ichnologia
    paleocen
    profil środkowej Wisły
    Kazimierz Dolny
    Europa Środkowa
    Opis:
    We describe a new echinoid assemblage, composed of specimens of Bolbaster sp., Cyclaster danicus (Schlüter, 1897), Diplodetus vistulensis (Kongiel, 1950) and Linthia? sp. in a distinctive phosphatic preservation, from the so-called Greensand, a marly glauconitic sandstone horizon at the base of the Danian succession in the Kazimierz Dolny area (central Poland). This assemblage presumably is of early Danian age, with Cyclaster danicus occurring in the lower Danian of Denmark and southern Sweden. The specimens are preserved as internal moulds, composed of phosphatised glauconitic sandstone, occasionally with some test material adhering. The genesis of these moulds involved the following steps: (1) infilling of tests of dead echinoids with glauconitic sand; (2) penetration of the infills by coelobiotic deposit-feeding organisms that produced burrows along the inner test surface; (3) early-diagenetic cementation of infills by calcium phosphate; and (4) exhumation and intraformational reworking of specimens, leading to abrasion, fragmentation and loss of test material in some individuals. Co-occurring are unphosphatised moulds of Echinocorys ex gr. depressa (von Eichwald, 1866) and Pseudogibbaster cf. depressus (Kongiel in Kongiel and Matwiejewówna, 1937), which may represent a younger (middle to late Danian) assemblage. Additionally, the presence of derived late Maastrichtian echinoids, e.g., Temnocidaris (Stereocidaris) ex gr. herthae (Schlüter, 1892), Pleurosalenia bonissenti (Cotteau, 1866) and Hemicara pomeranum Schlüter, 1902, is confirmed for the Greensand, based on new material and re- examination of previously recorded specimens. In summary, members of three echinoid assemblages of different age and preservation occur together in the Greensand. Our results are compatible with former interpretations of this unit as a condensed, transgressive lag with mixed faunas of different age and provenance. However, they are incompatible with the hypothesis that phosphatised Danian fossils preserved in the Greensand are derived from a facies equivalent, now gone, of the lower Danian Cerithium Limestone in eastern Denmark, because all moulds are composed of phosphatised glauconitic sandstone that is utterly different from the calcareous dinocyst-dominated, fine crystalline matrix of the Cerithium Limestone.
    Źródło:
    Acta Geologica Polonica; 2018, 68, 4; 571-596
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The odonatan insects from the Paleocene of Menat, Central France
    Autorzy:
    Nel, A.
    Jouault, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/31341382.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    insect
    Insecta
    Odonata
    fossil
    Macrogomphus menatensis
    Menatagrion hervetae
    Menatlestes palaeocenicus
    Thanetophilosina menatensis
    Valerea multicellulata
    Anisoptera
    Cephalozygoptera
    Zygoptera
    head
    morphology
    Paleocene
    Menat town
    France
    Auvergne region
    Źródło:
    Acta Palaeontologica Polonica; 2022, 67, 3; 631-648
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Debryty kohezyjne warstw istebniańskich (senon górny - paleocen) na zachód od Skawy
    Cohesive debrites of the Istebna Beds (Upper Senonian - Paleocene) West of the Skawa River
    Autorzy:
    Strzeboński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/183745.pdf
    Data publikacji:
    2005
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Karpaty zewnętrzne
    jednostka śląska
    warstwy istebniańskie
    senon górny
    paleocen
    kohezyjne spływy rumoszowe
    debryty kohezyjne
    egzotyki
    Outer flysch Carpathians
    Silesian unit
    Istebna beds
    Upper Senonian Paleocene
    aprons
    cohesive debris flows
    cohesive debrites
    exotics
    Opis:
    W pracy opisano debryty kohezyjne warstw istebniańskich zachodniej części jednostki śląskiej Karpat zewnętrznych. Przedstawiona litofacja reprezentuje utwory silikoklastyczne, zbudowane z mieszaniny mułowo-piaskowego spoiwa i rozproszonego materiału okruchowego frakcji psefitowej. Powstawanie debrytów kohezyjnych związane było z grawitacyjnymi spływami osadu, generowanymi na skłonie basenu sedymentacyjnego przez ruchy masowe. Prezentowane utwory deponowane były w formie fartuchów przez podwodne, kohezyjne spływy rumoszowe. Największy udział miąższościowy debrytów kohezyjnych (12%) stwierdzono w warstwach istebniańskich Beskidu Śląskiego, znaczący udział odnotowano w Beskidzie Małym (7%), a najmniejszy w Beskidzie Morawskim (2%). Z największą częstotliwością opisana litofacja występuje w obrębie piaskowców istebniańskich dolnych, a regułą jest także pojawianie się w stropie łupków istebniańskich dolnych debrytów kohezyjnych z litoklastami o największych rozmiarach. Około 25% opisanych utworów zawierało w składzie fazy rozproszonej materiał egzotykowy (egzotykowe debryty kohezyjne), w których dominowały skały krystaliczne, przede wszystkim gnejsy, łupki krystaliczne i granitoidy. Wśród znacznie rzadziej obserwowanych egzotyków skał osadowych stwierdzono wyraźne zwiększanie się z zachodu na wschód udziału różnego rodzaju wapieni
    Cohesive debrites of the Istebna Beds occur within the western part of the Silesian Unit of the Outer Flysch Carpathians. The lithofacies described represents siliciclastic deposits consisting of mud-sandy matrix and scattered, psephite-size clasts. The cohesive debrites originated from sediment gravity flows that were generated on the slope of sedimentary basin by mass-movements and were deposed as aprons by submarine, cohesive debris flows. The highest content of the cohesive debrites (12% of the succession thickness) has been recorded within the Istebna Beds of the Silesian Beskid Mts, the medium in the Beskid Mały Mts (7%) and the lowest within the Moravian Beskid Mts (2%). Most frequently the lithofacies presented occurs within the Lower Istebna Sandstones, while the cohesive debrites with the biggest lithoclasts occur within the top part of the Lower Istebna Shales. The exotic material with dominating crystalline rocks, mostly gneisses, schists and granitoids, makes up 25% of the described deposits (exotic cohesive debrites). Various types of limestones prevail among much rarer clasts of sedimentary rocks and the amount of the limestones distinctly increases going to the east
    Źródło:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2005, 31, 2; 201-224
    0138-0974
    Pojawia się w:
    Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patterns of spatio-temporal distribution as criteria for the separation of planktic foraminiferal species across the Danian-Selandian transition in Spain
    Autorzy:
    Arenillas, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/23054.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    spatial-temporal distribution
    paleoecology
    separation
    foraminiferal species
    Spain
    Paleocene
    taxonomy
    Foraminifera
    qualitative data
    quantitative data
    Eoglobigerina
    Subbotina
    Parasubbotina
    Globanomalina
    Luterbacheria
    Acarinina
    Igorina
    Morozovella
    Praemurica
    Chiloguembelina
    Zeauvigerina
    morphology
    Acarinina trinidadensis
    Praemurica inconstans
    Acarinina praecursoria
    Acarinina uncinata
    Morozovella conicontruncata
    Morozovella angulata
    Morozovella cf.albeari
    Igorina albeari
    Opis:
    Danian–Selandian (D–S) planktic foraminiferal taxonomy and paleoecology, including the most problematic index−species of biochronological schemes, are here revised based on qualitative and quantitative data from the Caravaca and Zumaia sections, Spain. As a first step the morphological and microtextural diagnostic characters are revised in order to achieve appropriate morphological distinctions of the investigated species. The analysis of latitudinal preferences of the planktic foraminiferal species deduced from a comparison of their relative abundances at Caravaca (western Tethyan subtropical waters) and Zumaia (central North Atlantic warm temperate waters) in suite with a statistical comparison of quantitative stratigraphic distributions of the species at Caravaca have shown several divergences in their patterns of spatio−temporal distribution (i.e., in their latitudinal preferences and quantitative stratigraphic distributions). This analysis allowed taxonomical separation of 41 species from the following genera: Eoglobigerina, Subbotina, Parasubbotina, Globanomalina, Luterbacheria, Acarinina, Igorina, Morozovella, Praemurica, Chiloguembelina, and Zeauvigerina. Morphologically convergent species pairs such as Acarinina trinidadensis and Praemurica inconstans, Acarinina praecursoria and Acarinina uncinata, Morozovella conicontruncata and Morozovella angulata, or Morozovella cf. albeari and Igorina albeari, are well differentiated using aforementioned criteria. Since some of the species are index−taxa, the taxonomic refinements are essential to clarify and compare the planktic foraminiferal zonations from the Danian–Sealandian transition. A new lower/higher (L/H) latitude taxa ratio is proposed for paleoclimatic interpretations based on the paleoecological and quantitative studies. Fluctuations in L/H ratio in the Caravaca section suggest three climate warming events during the D–S transition, one of them probably occurring at the D–S boundary.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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