Sinemydidae
| Sinemydidae Temporal range:
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|---|---|
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| Jeholochelys | |
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| Ordosemys | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Pantestudines |
| Clade: | Testudinata |
| Clade: | Perichelydia |
| Family: | †Sinemydidae Yeh, 1963 |
| Genera | |
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See text | |
Sinemydidae is an extinct family of turtles from the Jurassic and Cretaceous of East Asia.[1] Their exact position is engimatic, they have alternatively been considered stem-group cryptodires, but also "crownward stem-turtles" alongside Macrobaenidae, Paracryptodira, Xinjiangchelyidae, Thalassochelydia and Sandownidae outside of crown Testudines.
Genera
[edit]- Dracochelys[2] Lianmugin Formation, China, Early Cretaceous (Aptian-Albian)
- Hongkongochelys[2] Upper Shaximiao Formation, China, Middle-Late Jurassic
- Jeholochelys[2] Jiufotang Formation, China, Early Cretaceous (Aptian)
- Liaochelys[1][2] Jiufotang Formation, China, Early Cretaceous (Aptian)
- Manchurochelys[2] Yixian Formation, China, Early Cretaceous (Aptian)
- Ordosemys[2]
- O. leios Luohandong Formation, China, Early Cretaceous
- O. liaoxiensis Chengzihe Formation, China, Early Cretaceous (Aptian)
- O. brinkmania Lianmugin Formation, China, Early Cretaceous (Aptian-Albian)
- O. perforata Khulsangol Formation, Mongolia, Early Cretaceous (Albian)
- O. donghai Chengzihe Formation, China, Early Cretaceous (Aptian-Albian)
- Sinemys[2]
- †Sinemys brevispinus Tong and Brinkman 2012 Laohongdong Formation, China, Early Cretaceous
- †Sinemys chabuensis Ji and Chen 2018 Jingchuan Formation, China, Early Cretaceous (Barremian)
- †Sinemys gamera Brinkman and Peng 1993 Luohandong Formation, China, Early Cretaceous (Valanginian-Hauterivian)
- †Sinemys lens Wiman 1930 Mengyin Formation, China, Early Cretaceous (Berriasian-Valanginian)
- Wuguia[2]
- †Wuguia efremovi Khozatsky 1996 Hutubei Formation, China, Hauterivian/Barremian Lianmuxin Formation, China, Early Cretaceous (Aptian-Albian)
- †Wuguia hutubeiensis Matzke et al. 2004 Hutubei Formation, China, Hauterivian/Barremian
- Xiaochelys[1][2] Lianmugin Formation, China, Early Cretaceous (Aptian-Albian)
- Yumenemys[2] Hui-Hui-P'u, China, Late Cretaceous
Material from the Paleocene of California previously attributed to c.f. Sinemyididae is now attributed to macrobaenids.[3]
Phylogeny
[edit]Cladogram of Perichelydia after Miller et al. 2023, showing the two proposed positions of Sinemydidae.[4]
| Perichelydia |
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References
[edit]- ^ a b c C.-F. Zhou; M. Rabi (2015). "A sinemydid turtle from the Jehol Biota provides insights into the basal divergence of crown turtles". Scientific Reports. 5 16299. Bibcode:2015NatSR...516299Z. doi:10.1038/srep16299. PMC 4639786. PMID 26553740.
- ^ a b c d e f g h i j "Sinemydidae". Fossilworks. Retrieved 17 December 2021.
- ^ Gentry, Andrew D.; Kiernan, Caitlín R.; Parham, James F. (June 2023). "A large non-marine turtle from the Upper Cretaceous of Alabama and a review of North American "Macrobaenids"". The Anatomical Record. 306 (6): 1411–1430. doi:10.1002/ar.25054. ISSN 1932-8486. PMID 37158131.
- ^ Miller, Eve; Lee, Hiu Wai; Abzhanov, Arkhat; Evers, Serjoscha W. (August 2024). "The topological organization of the turtle cranium is constrained and conserved over long evolutionary timescales". The Anatomical Record. 307 (8): 2713–2748. doi:10.1002/ar.25356. ISSN 1932-8486.
External links
[edit]- "Chelonii: Centrocryptodira". palaeos.com. Archived from the original on April 5, 2023.
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