Temporal range: Oxfordian–Paleocene
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Pantestudines
Clade: Testudinata
Clade: Perichelydia
Family: Sinemydidae
Yeh, 1963

See text

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.



  1. ^ a b c C.-F. Zhou and 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.((cite journal)): CS1 maint: uses authors parameter (link)
  2. ^ "Sinemydidae". Fossilworks. Retrieved 17 December 2021.
  3. ^ a b c d e f g h i j "Sinemydidae". Fossilworks. Retrieved 17 December 2021.