After carroll, 1988, and Lapparent de Broin, 2000
<==o †Thalassemyidae Rütimeyer, 1878 |-- †Desmemyss Wegner, 1911 [a pleurosternid?] |-- †Padiochelys [?Chelonemys] |--o †Thalassemys Rütimeyer, 1859 | |-- †T. carva Nessov, 1984 | |-- †T. hugii Rütimeyer, 1873 [Thalassemys gresslyi Rütimeyer, 1873] | `-- †T. moseri Bräm, 1965 [on skull characters (Gaffney & Meylan, 1988) (Milner, 2004)] |--o †Tropidemys Rütimeyer, 1873 | |-- †T. langi Rütimeyer, 1873 [Tropidemys expansa Rütimeyer 1873, Tropidemys gibba Rütimeyer, 1873] | |-- †T. morinica Sauvage, 1880 | `-- †T. seebachi Portis, 1878 `-- †Yaxartermys
Reference(s):
- Lapparent de Broin, F. de, 2000: African chelonians from the Jurassic to the Present: Phases of development and preliminary catalogue of the fossil record.
–Palaeontologica Africana:Vol. 36, pp. 43-82