From Wikipedia, the free encyclopedia
Extinct family of turtles
Sinemydidae is an extinct family of
turtles from Cretaceous to Paleocene deposits in Asia and North America.
[1]
[2] 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
-
Dracochelys
[3]
Lianmugin Formation, China, Early Cretaceous (Aptian-Albian)
-
Hongkongochelys
[3] Upper
Shaximiao Formation, China, Middle-Late Jurassic
-
Jeholochelys
[3]
Jiufotang Formation, China, Early Cretaceous (Aptian)
-
Liaochelys
[1]
[3] Jiufotang Formation, China, Early Cretaceous (Aptian)
-
Manchurochelys
[3]
Yixian Formation, China, Early Cretaceous (Aptian)
-
Ordosemys
[3]
- 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
[3]
-
Wuguia
[3]
- †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]
[3] Lianmugin Formation, China, Early Cretaceous (Aptian-Albian)
-
Yumenemys
[3] Hui-Hui-P'u, China, Late Cretaceous
References
External links