PaleoDB taxon number: 366379

Full reference: O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568

Belongs to Emydidae according to E. Vlachos 2018

Sister taxa: Batagurinae, Callagur, Chelonemys, Chelopus, Chinemys, Chrysemys, Chrysemys inflata, Chrysemys isoni, Chrysemys limnodytes, Cistudo, Clemmys hutchensorum, Clemmys saxea, Deirochelyinae, Deirochelys, Emydinae, Emydoidea, Emydoidea hutchisoni, Emys, Epiemys, Glyptemys, Graptemys, Grayemys, Hardella, Heosemys, Hieremys, Hybemys, Lyssemys, Malacoclemmys, Malayemys, Melanochelys, Morenia, Notochelys, Palaeotheca, Polyechmatemys, Pseudemys, Pseudemys bisornatus, Pseudemys caelata, Pseudemys extincta, Pseudemys hillii, Pseudochrysemys, Pseudograptemys, Pyxidea, Sakya, Senryuemys, Shansiemys, Sharemys, Terrapene, Trachemys

Type specimen: USNM 16679 (holotype), a partial shell (nuchal plate). Its type locality is Peace River 3A, which is in a Pleistocene terrestrial siliciclastic in Florida.