Reptilia - Testudines - Thalassemydidae
Under the current state of knowledge, it may appear superfluous to maintain the name Thalassemydidae because it is redundant with Thalassemys at the moment. However, the phylogenetic relationships of Thalassemys spp. with other thalassochelydians have never been properly explored. One of the main reasons for this is the absence of cranial material for thalassemydids. Pending better understanding of thalassochelydian relationships, we maintain the use of the name Thalassemydidae for practical reasons, but, once again highlight its taxonomic ambiguity through the use of quotation marks.
Alternative spelling: Thalassemyidae
Synonym: Acichelyidae Lydekker 1889
Parent taxon: Pancryptodira according to C. Puntener et al. 2015
See also Anquetin et al. 2014, Carroll 1988, Delair 1958, Hay 1902, Hay 1908, Hay 1930, Jaekel 1911, Kuhn 1946, Kuhn 1966, Lortet 1892, Lydekker 1889 and Zittel 1890
Sister taxa: Macrobaenidae, Owadowia
Subtaxa: Acichelys Changisaurus Emys beaugrandi Pelobatochelys Phyllemys Sontiochelys Trionyx primoevus Yaxartemys
Ecology:
Distribution:
• Cretaceous of Slovenia (1 collection)
• Jurassic of China (1), France (2), Germany (2), Kazakhstan (1), the United Kingdom (1)
Total: 8 collections each including a single occurrence