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Tytuł:
New data on lindholmemydid turtle Lintholmemys from the Late Cretaceous of Mongolia
Autorzy:
Danilov, I G
Sukhanov, V.B.
Powiązania:
https://bibliotekanauki.pl/articles/22651.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
locality
Late Cretaceous
Cretaceous
turtle
Lindholmemys
Mongolia
Asia
Lindholmemys martinsoni
Lindholmemydidae
shell fragment
Sheeregeen Gashoon
Bayn Shire Formation
lindholmemydid turtle
shell morphology
paleontology
Opis:
Reinvestigation of a fragmentary lindholmemydid turtle from a Mongolian locality Sheeregeen Gashoon (late Turonian-Santonian) suggested reassignment to Lindholmemys martinsoni Ckhikvadze, 1975. This restricts the stratigraphic range of the genus Mongolemys, to which the specimen was originally assigned. Additionally, new morphologica1 data on L. martinsoni have been gathered and are presented in this paper. The Lindholmemydidae are considered here as a paraphyletic group uniting primitive testudinoids (all of which are known from Cretaceous to Paleocene of Asia). Their shell morphology is characterized by well developed plastral buttresses, which contact costal bones (synapomorphy of testudinoids, see Gaffney & Meylan 1988) and by complete (uninterrupted) row of inframarginal scutes (primitive character).
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A basal eucryptodiran turtle 'Sinemys' efremovi [-Waguia efremovi] from the Early Cretaceous of China
Autorzy:
Danilov, I G
Sukhanov, V.B.
Powiązania:
https://bibliotekanauki.pl/articles/21804.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Early Cretaceous
Cretaceous
Testudines
turtle
China
eucryptodiran turtle
Junggar Basin
Macrobaenidae
Eucryptodira
Wuguia efremovi
Sinemys efremovi
paleontology
Opis:
A reexamination of the type material (two specimens considered for a long time lost) of the poorly known turtle “Sinemys” efremovi Khosatzky, 1996 from the Early Cretaceous Tugulu Group of northwest China, allows us to present new observations, images, and taxonomic conclusions about these important specimens. We conclude that: (1) “S.” efremovi is referrable to the basal eucryptodire genus Wuguia Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004 based on a small size (up to 150 mm in shell length), absence of the nuchal emargination, presence of additional ossifications in the suprapygal region of the carapace and similar plastral proportions with relatively long bridges (35−45% of the plastron width), and a narrow and elongated posterior lobe; (2) “S.” efremovi is a senior subjective synonym of Dracochelys wimani Maisch, Matzke, and Sun, 2003, another species recently described from the Tugulu Group. As construed here, Wuguia includes two species: W. efremovi (Khosatzky, 1996) and W. hutubeiensis Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004. New diagnoses for these taxa are given.
Źródło:
Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carapace bone histology in the giant pleurodiran turtle Stupendemys geographicus: phylogeny and function
Autorzy:
Scheyer, T M
Sanchez-Villagra, M.R.
Powiązania:
https://bibliotekanauki.pl/articles/20658.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
bone histology
Pleurodira
phylogenesis
bone analysis
Miocene
Stupendemys geographicus
Pelomedusoides
bone microstructure
giant pleurodiran turtle
Testudines
Bothremydidae
Podocnemidae
paleontology
Opis:
Stupendemys geographicus (Pleurodira: Pelomedusoides: Podocnemidae) is a giant turtle from the Miocene of Venezuela and Brazil. The bone histology of the carapace of two adult specimens from the Urumaco Formation is described herein, one of which is the largest of this species ever found. In order to determine phylogenetic versus scaling factors influencing bone histology, S. geographicus is compared with related podocnemid Podocnemis erythrocephala, and with fossil and Recent pelomedusoides taxa Bothremys barberi, Taphrosphys sulcatus, “Foxemys cf. F. mechinorum”, and Pelomedusa subrufa. Potential scaling effects on bone histology were further investigated by comparison to the Pleistocene giant tortoise Hesperotestudo (Caudochelys) crassiscutata and the Late Cretaceous marine protostegid turtle Archelon ischyros. A diploe structure of the shell with well developed external and internal cortices framing interior cancellous bone is plesiomorphic for all sampled taxa. Similarly, the occurrence of growth marks in the shell elements is interpreted as plesiomorphic, with the sampled neural elements providing the most extensive record of growth marks. The assignment of S. geographicus to the Podocnemidae was neither strengthened nor refuted by the bone histology. A reduced thickness of the internal cortex of the shell elements constitutes a potential synapomorphy of the Bothremydidae. S. geographicus and H. crassiscutata both express extensive weight−reduction through lightweightconstruction while retaining form stability of the shell. The bone histology of A. ischyros presents features likely related to an open marine lifestyle.
Źródło:
Acta Palaeontologica Polonica; 2007, 52, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The cranial anatomy of the Early Jurassic turtle Kayentachelys aprix
Autorzy:
Sterli, J.
Joyce, W.G.
Powiązania:
https://bibliotekanauki.pl/articles/22757.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
cranial anatomy
Cryptodira
Testudines
Jurassic
Early Jurassic
turtle
Kayentachelys aprix
evolution
fossil record
Kayenta Formation
Arizona
paleontology
systematics
Opis:
The fossil turtle Kayentachelys aprix is known from Early Jurassic sediments of the Kayenta Formation, Arizona, USA. The detailed description of this taxon’s cranium offered in this paper demonstrates that this turtle presents a mixture of primitive and derived character states. Among others, the presence of an interpterygoid vacuity, a basipterygoid process, a prootic that is exposed in ventral view, and a foramen posterius canalis carotici interni that is formed entirely by the basisphenoid are generally considered primitive for turtles. On the other hand, the presence of an undivided apertura narium, a well developed cavum tympani, an incipient cavum postoticum, and an unpaired vomer are considered to be derived. Kayentachelys aprix has previously been hypothesized to be the oldest stem cryptodiran turtle because of the presence of a flat, vertical plate on the processus pterygoideus externus, and the presence of a processus trochlearis oticum. However, the presence of these characters cannot be confirmed in the available specimens. Other putative stemcryptodiran characters, such as the prefrontal−vomer contact and the presence of an epipterygoid, are herein corroborated as being symplesiomorphies, because they generally appear to be present in basal turtles.
Źródło:
Acta Palaeontologica Polonica; 2007, 52, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symbolika ptaków w "Enarrationes in Psalmos" świętego Augustyna
Symbolism of the Birds in "Enarrationes in Psalmos" of Saint Augustine
Autorzy:
Cieśluk, Marek
Powiązania:
https://bibliotekanauki.pl/articles/612416.pdf
Data publikacji:
2008
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Augustyn
Enarrationes in Psalmos
ptak
symbolika
orzeł
kruk
pelikan
wróbel
synogarlica
Augustine
bird
simbolical meaning
eagle
pelican
tawny owl
sparrow
turtle dove
Opis:
The article discusses the symbolism of birds and shows how Augustine in his work "Enarrationes in Psalmos" uses in his pastoral work the appearing in the text references to such the birds: eagle, hen, pelican, tawny owl, sparrow and turtle dove. In explaining the texts of the Psalms, Augustine tries to relate their symbolic meanings, if possible, to Christ. In all the analyzed passages, we can see Bishop Hippo as a pastor who not only tries to explain the difficult texts of the Old Testament based on his knowledge, but also makes efforts that they best influence the Christians.
Artykuł omawia symbolikę ptaków i ukazuje w jaki sposób Augustyn w swym dziele "Enarrationes in Psalmos" wykorzystuje pojawiające się odniesienia do ptaków: orła, kokoszy, pelikana, puszczyka, wróbla i synogarlicy.  Augustyn wyjaśniając teksty psalmów stara się dostrzeżone w nich symboliczne znaczenia odnieść, o ile to możliwe, do Chrystusa. We wszystkich analizowanych fragmentach możemy dostrzec biskupa Hippony jako duszpasterza, który nie tylko stara się w oparciu o posiadaną wiedzę tłumaczyć niełatwe teksty Starego Testamentu, ale dokłada też starań, aby jak najlepiej wpływały one na powierzonych jego opiece chrześcijan.
Źródło:
Vox Patrum; 2008, 52, 1; 87-98
0860-9411
2719-3586
Pojawia się w:
Vox Patrum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia
Autorzy:
Sukhanov, V.B.
Danilov, I.G.
Syromyatnikova, E.V.
Powiązania:
https://bibliotekanauki.pl/articles/21943.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
description
phylogenetic position
new species
nanhsiungchelyid turtle
Kharakhutulia kalandadzei
turtle
Late Cretaceous
Mongolia
Kharakhutulia
paleontology
Nanhsiungchelyidae
Cryptodira
Testudines
Upper Cretaceous
Opis:
This paper describes a new nanhsiungchelyid turtle, Kharakhutulia kalandadzei gen. et sp. nov., based on two partial shells and additional shell fragments from the lower part of the Bainshire Formation (Upper Cretaceous, Cenomanian–lower Turonian) of the Khara Khutul locality of Eastern Mongolia. Our phylogenetic analysis places Kharakhutulia kalandadzei as the most basal member of the Nanhsiungchelyidae and suggests new relationships within this group. Previously reported nanhsiungchelyid specimens from the Khara Khutul are reassigned to Nanhsiungchelyidae indet. and Hanbogdemyssp. indet. Thus the Khara Khutul includes at least two valid taxa of nanhsiungchelyids. Our analysis of the nanhsiungchelyid record in Asia shows that other localities have only a single representative of this clade, making Khara Khutul a unique site. The basal phylogenetic position of Kharakhutulia kalandadzei emphasizes the importance of the study of this and other Cenomanian–Turonian localities of Asia to better understand the basal diversification of the Nanhsiungchelyidae.
Źródło:
Acta Palaeontologica Polonica; 2008, 53, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basicladia chelonum [Collins] W.E.Hoffmann et Tilden [Chlorophyta, Cladophorophyceae] fron Cuba [Caribbean]: new observation of the ultrastructure of its vegetative cells
Autorzy:
Mrozinska, T
Czerwik-Marcinkowska, J.
Webb-Janich, M.
Powiązania:
https://bibliotekanauki.pl/articles/57776.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Caribbean Region
taxonomy
alga
ultrastructure
Basicladia chelonum
Cuba
Chlorophyta
green alga
vegetative cell
turtle
Cladophorophyceae
Opis:
Basicladia chelonum (Collins) W.E. Hoffmann and Tilden (1930) principally known from North America and Hawaii was recently (2004) found in Cuba (Caribbean) from artificial pool growing on shells of musk turtles (Trachemys decussata Gray). Specimens collected in Cuba were subjected to detailed examinations also using a transmission electron microscope. On one hand, these studies confirmed many features of this species previously described by earlier authors in the specimens from Texas. On the other hand, the present studies revealed structures unknown so far (pyrenoid structure), which allowed for new analysis of this species. These investigations also have shown that Basicladia chelonum exhibits close similarity to the genus Cladophora and other representatives of the class Cladophorophyceae. The similarities include : siphonocladous level of organization of thallus, numerous chloroplasts forming a network and other structures. Conversely, the pyrenoid in vegetative cells of Basicladia chelonum distinguishes it markedly from representatives of the genus Cladophora, which have bilenticular pyrenoids divided into two hemispheres by a single thylakoids and each hemisphere is covered by a bowlshaped starch grain (Van Hoek et al. 1995). Since in Cladophora the ultrastructure of the pyrenoid is highly constant and characteristic, this contrasts with the genus Basicladia and, therefore, more firmly establishes position of the latter as an independent unit within Cladophorophyceae.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 1; 63-67
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oldest African eucryptodiran turtle from the Cretaceous of Angola
Autorzy:
Mateus, O.
Jacobs, L.
Polcyn, M.
Schulp, A.S.
Vineyard, D.
Buta Neto, A.
Antunes, M.T.
Powiązania:
https://bibliotekanauki.pl/articles/21522.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Cretaceous
fauna
Africa
eucryptodiran turtle
turtle
Eucryptodira
Angola
paleobiogeography
Turonian
phylogenetic analysis
Opis:
A new Late Cretaceous turtle, Angolachelys mbaxi gen. et sp. nov., from the Turonian (90 Mya) of Angola, represents the oldest eucryptodire from Africa. Phylogenetic analysis recovers Angolachelys mbaxi as the sister taxon of Sandownia harrisi from the Aptian of Isle of Wight, England. An unnamed turtle from the Albian Glen Rose Formation of Texas (USA) and the Kimmeridgian turtle Solnhofia parsonsi (Germany), are successively more distant sister taxa. Bootstrap analysis suggests those four taxa together form a previously unrecognized monophyletic clade of marine turtles, herein named Angolachelonia clade nov., supported by the following synapomorphies: mandibular articulation of quadrate aligned with or posterior to the occiput, and basisphenoid not visible or visibility greatly reduced in ventral view. Basal eucryptodires and angolachelonians originated in the northern hemisphere, thus Angolachelys represents one of the first marine amniote lineages to have invaded the South Atlantic after separation of Africa and South America.
Źródło:
Acta Palaeontologica Polonica; 2009, 54, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new freshwater basal eucryptodiran turtle from the Lower Cretaceous of Spain
Autorzy:
Perez-Garcia, A.
De La Fuente, M.S.
Ortega, F.
Powiązania:
https://bibliotekanauki.pl/articles/20420.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
new genus
new species
freshwater turtle
eucryptodiran turtle
Lower Cretaceous
Cretaceous
paleontology
Spain
Testudines
Eucryptodira
Barremian
Las Hoyas
Opis:
A freshwater turtle from the lithographic limestone of Las Hoyas (Barremian of Cuenca, Spain) is described as a new genus and species of Eucryptodira, Hoyasemys jimenezi. The holotype consists of the skull, lower jaw, carapace, plastron, vertebral column, pectoral and pelvic girdle remains, and foreand hindlimbs. Hoyasemys jimenezi gen. et sp. nov. is characterized by three pairs of blind oblique depressions on the ventral surface of the basisphenoid, and a character combination composed, among others, of the articulation between the fourth and fifth cervical vertebrae through a cotyle in the fourth and a condyle in the fifth, amphicoelous caudal centra, and most digits of manus and pes with three elongated phalanges. This study allows clarification of the systematic position of a species of uncertain affinity often identified as “chelydroid” in appearance. A phylogenetic analysis shows Hoyasemys jimenezi gen. et sp. nov. forms a monophyletic group with Judithemys sukhanovi, Dracochelys bicuspis, Sinemys lens, and Ordosemys leios, collectively the sister group of crown Cryptodira.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The European Early Cretaceous cryptodiran turtle Chitracephalus dumonii and the diversity of a poorly known lineage of turtles
Autorzy:
Perez-Garcia, A.
Powiązania:
https://bibliotekanauki.pl/articles/21609.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Europe
Lower Cretaceous
cryptodiran turtle
turtle
Chitracephalus dumonii
animal diversity
Testudines
Eucryptodira
Cryptodira
Cretaceous
Belgium
Spain
synonym
paleontology
phylogenetic analysis
systematics
holotype
Salasemys pulcherrima
Opis:
Chitracephalus dumonii was named based on some of the most complete turtle remains from the Lower Cretaceous of Europe, and yet the taxon has barely been mentioned since. Indeed, new specimens were erroneously attributed to a new taxon, “Salasemys pulcherrima”. The synonymy is recognized here, and this extends the geographical range of this turtle and provides examples of individuals at different stages of ontogenetic development. The peculiar structure of its shell, and its ontogenetic development, are unique to this taxon. The systematic position of C. dumonii was previously unclear, usually being referred to Testudinata incertae sedis. Here, it is placed in a cladistic analysis, which shows that C. dumonii, and the recently described Hoyasemys jimenezi form part of a Lower Cretaceous European clade of Cryptodira that includes “macrobaenid”, “sinemydid”, and panchelonioidean turtles.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carapace anomalies of pond turtles (Emys orbicularis) from the Poleski National Park, from the hatch of 2008
Anomalie karapaksu żółwi błotnych (Emys orbicularis) z Poleskiego Parku Narodowego z lęgu 2008 roku
Autorzy:
Kosik, E.
Wójcik, M.
Beeger, S.
Rozempolska-Rucińska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2196894.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
carapace anomaly
pond turtle
Emys orbicularis
Polesie National Park
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2013, 31, 1; 34-42
0239-4243
2083-7399
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new soft-shelled trionychid turtle of the genus Khunnuchelys from the Upper Cretaceous Bostobe Formation of Kazakhstan
Autorzy:
Danilov, I.G.
Vitek, N.S.
Averianov, A.O.
Glinskiy, V.N.
Powiązania:
https://bibliotekanauki.pl/articles/945569.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
new species
soft-shelled turtle
Testudines
Trionychidae
Trionychia
Khunnuchelys lophorhothon
Upper Cretaceous
Cretaceous
Bostobe Formation
Kazakhstan
Opis:
Previously unpublished trionychid turtle material from the Upper Cretaceous (Santonian–lower Campanian) Bostobe Formation from the Baybishe and Baykhozha localities in Kazakhstan is described. The material represents a new species of Khunnuchelys, a large, skull-based clade of Cretaceous Asian trionychids. Concordant with other partial skulls and fragmentary specimens described previously, Khunnuchelys lophorhothon sp. nov. has the unusual features of a beaklike maxilla and a vaulted, expanded triturating surface. In addition, the specimens reveal novel features including a constricted skull roof. Although estimates of the length of the carapace differ depending on estimation method, the skull belonged to a turtle of comparable size to the shell-based species “Trionyx” kansaiensis from the same formation. It is likely that K. lophorhothon and “T.” kansaiensis are synonymous, but this can be proved only by a find of associated skull and shell material.
Źródło:
Acta Palaeontologica Polonica; 2015, 60, 1; 155-161
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decompression syndrome and diving behavior in Odontochelys, the first turtle
Autorzy:
Rothschild, B.M.
Naples, V.
Powiązania:
https://bibliotekanauki.pl/articles/945596.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Testudines
Odontochelys semitestacea
turtle
diving behaviour
bone
pathology
avascular necrosis
osteonecrosis zob.avascular necrosis
bone infarction zob.avascular necrosis
aseptic necrosis zob.avascular necrosis
ischaemic bone necrosis zob.avascular necrosis
Triassic
Late Triassic
China
Opis:
Odontochelys semitestacea, the oldest known turtle, from the Late Triassic of China, shows a pathology. Sharply defined, focal depressions were noted on the articular surfaces of both humeri, documenting avascular necrosis. Diving habits of Mesozoic marine reptiles have been characterized on the basis of this localized form of bone death attributed to decompression syndrome. Pursuit by a predator was likely the cause of dangerously rapid depth changes by swimming turtles. The prevalence of avascular necrosis decreased geometrically from the Cretaceous to the Pleistocene. This study suggests that the habit of repetitive diving in turtles was already present in the Late Triassic, but that protective physiological and behavioral adaptations had not yet evolved.
Źródło:
Acta Palaeontologica Polonica; 2015, 60, 1; 163-167
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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