Wyniki wyszukiwania

1

New species of Falcaustra (Nematoda: Kathlaniidae) in Batagur trivittata (Testudines: Geoemydidae) from Myanmar

100%

Bursey C. R., Platt S. G.

Acta Parasitologica

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2018

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tom 63

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nr 4

2

Nest-site fidelity of the European pond turtle Emys orbicularis (LINNAEUS, 1758) (Testudines: Emydidae) in western Poland

100%

Najbar B., Szuszkiewicz E.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2007

|

tom 50A

|

nr 1-2

3

New species of Eimeria [Apicomplexa] from captive wood turtles, Clemmys insculpta [Testudines: Emydidae], from the Dallas Zoo

100%

Upton S. J., McAllister C. T., Garrett C. M.

Acta Protozoologica

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1995

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tom 34

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nr 1

4

Two eimerian Coccidia [Apicomplexa: Eimeriidae] from the critically endangered Arakan forest turtle Heosemys depressa [Testudines: Geoemydidae], with description of Eimeria arakanensis n.sp.

100%

Siroky P., Modry D.

Acta Protozoologica

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2006

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tom 45

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nr 2

5

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The cranial anatomy of the Early Jurassic turtle Kayentachelys aprix

80%

Sterli J., Joyce W. G.

Acta Palaeontologica Polonica

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2007

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tom 52

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nr 4

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.

6

The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia

80%

Sukhanov V. B., Danilov I. G., Syromyatnikova E. V.

Acta Palaeontologica Polonica

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2008

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tom 53

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nr 4

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.

7

Decompression syndrome and diving behavior in Odontochelys, the first turtle

80%

Rothschild B. M., Naples V.

Acta Palaeontologica Polonica

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2015

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tom 60

|

nr 1

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.

8

A new soft-shelled trionychid turtle of the genus Khunnuchelys from the Upper Cretaceous Bostobe Formation of Kazakhstan

80%

Danilov I. G., Vitek N. S., Averianov A. O., Glinskiy V. N.

Acta Palaeontologica Polonica

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2015

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tom 60

|

nr 1

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.

9

A new freshwater basal eucryptodiran turtle from the Lower Cretaceous of Spain

80%

Perez-Garcia A., De La Fuente M. S., Ortega F.

Acta Palaeontologica Polonica

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2012

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tom 57

|

nr 2

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.

10

Reproductive ecology of the European pond turtle Emys orbicularis [Linnaeus, 1758] [Testudines: Emydidae] in Western Poland

80%

Najbar B., Szuszkiewicz E.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

|

2005

|

tom 48A

|

nr 1-2

11

Carapace bone histology in the giant pleurodiran turtle Stupendemys geographicus: phylogeny and function

80%

Scheyer T. M., Sanchez-Villagra M. R.

Acta Palaeontologica Polonica

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2007

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tom 52

|

nr 1

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.

12

A basal eucryptodiran turtle 'Sinemys' efremovi [-Waguia efremovi] from the Early Cretaceous of China

80%

Danilov I. G., Sukhanov V. B.

Acta Palaeontologica Polonica

|

2006

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tom 51

|

nr 1

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.

13

The European Early Cretaceous cryptodiran turtle Chitracephalus dumonii and the diversity of a poorly known lineage of turtles

71%

Perez-Garcia A.

Acta Palaeontologica Polonica

|

2012

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tom 57

|

nr 3

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.

14

Eimeriid coccidia (Apicomplexa: Eimeriidae) from geoemydid turtles (Testudines: Geoemydidae) with a description of six new species

61%

Siroky P., Modry D.

Acta Protozoologica

|

2010

|

tom 49

|

nr 4

15

Zolw blotny Emys orbicularis

50%

Keller M.

Las Polski

|

2000

|

nr 20

19

16

Zolwi park

50%

Wisniewski T.

Echa Leśne

|

1994

|

tom 19

|

nr 04

20-22

17

Zolw blotny

50%

Wasik S.

Przyroda Polska

|

1992

|

nr 11

8-9

Ograniczanie wyników

New species of Falcaustra (Nematoda: Kathlaniidae) in Batagur trivittata (Testudines: Geoemydidae) from Myanmar

Nest-site fidelity of the European pond turtle Emys orbicularis (LINNAEUS, 1758) (Testudines: Emydidae) in western Poland

New species of Eimeria [Apicomplexa] from captive wood turtles, Clemmys insculpta [Testudines: Emydidae], from the Dallas Zoo

Two eimerian Coccidia [Apicomplexa: Eimeriidae] from the critically endangered Arakan forest turtle Heosemys depressa [Testudines: Geoemydidae], with description of Eimeria arakanensis n.sp.

The cranial anatomy of the Early Jurassic turtle Kayentachelys aprix

The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia

Decompression syndrome and diving behavior in Odontochelys, the first turtle

A new soft-shelled trionychid turtle of the genus Khunnuchelys from the Upper Cretaceous Bostobe Formation of Kazakhstan

A new freshwater basal eucryptodiran turtle from the Lower Cretaceous of Spain

Reproductive ecology of the European pond turtle Emys orbicularis [Linnaeus, 1758] [Testudines: Emydidae] in Western Poland

Carapace bone histology in the giant pleurodiran turtle Stupendemys geographicus: phylogeny and function

A basal eucryptodiran turtle 'Sinemys' efremovi [-Waguia efremovi] from the Early Cretaceous of China

The European Early Cretaceous cryptodiran turtle Chitracephalus dumonii and the diversity of a poorly known lineage of turtles

Eimeriid coccidia (Apicomplexa: Eimeriidae) from geoemydid turtles (Testudines: Geoemydidae) with a description of six new species

Zolw blotny Emys orbicularis

Zolwi park

Zolw blotny