Full reference: R. Lydekker. 1889. On certain chelonian remains from the Wealden and Purbeck. Quarterly Journal of the Geological Society 45:511-518
Parent taxon: Testudines according to O. W. M. Kuhn 1966
See also Baur 1893, Delair 1958, Estes 1964, Hay 1908, Khosatzky and Mlynarski 1971, Lydekker 1889, Lydekker 1889, Olson 1947, Roxo 1937 and Swinton 1934
Sister taxa: Apertotemporalis, Apholidemys, Asturichelys, Athecae, Casichelydia, Chelone obovata, Chelone sopita, Cryptodira, Cryptrodiramorpha, Euclastochelys, Euclastochelys interrupta, Haichemydidae, Larachelus, Meiolania damelipi, Pancryptodira, Panpleurodira, Paracryptodira, Platychelone, Platychelone emarginata, Plesiochelydiae, Pleurodira, Podocnemis lata, Proganochelydia, Senonemys suemegensis, Sokotochelys, Tacuarembemys, Temnoclemmys cordiformis, Thalassochelydia, Thecophora, Trionychidae, Trionyx fuchienensis, Trionyx tshelkarensis, Protemys, Oligochelone, Chelycarapookidae, Padiochelys, Chelonoides, Pachychelys, Chelonipus, Tomochelone, Yaxartemys, Glaucochelone, Halmyrachelidae, Pseudosphargis, Chelonichnium, Metachelydia, Marina, Terrestria, Cryptodiramorpha, Paludinosa, Fluvialia
Subtaxa: Pleurosternoidea Proganochelyoidea
Ecology: