Invalid subtaxa: Compsemys anglica Lydekker 1889 [nomen dubium], Glyptops caelatus Hay 1908 [nomen dubium], Helochelydra anglica Lydekker 1889 [nomen dubium], Platychelys anglica Lydekker 1889 [nomen dubium], Probaena sculpta Hay 1903 [nomen dubium], Protochelys Lydekker 1889 [nomen dubium], Protochelys blakii Mackie 1863 [nomen dubium], Protochelys stricklandi Phillips 1871 [nomen dubium], Testudo stricklandi Phillips 1871 [nomen dubium]
Parent taxon: Reptilia according to J. Sterli 2008
Sister taxa: Amblyglossae, Anapsida, Coeluria, Cunichnoides, Enaliosauria, Eupalamopus, Eureptilia, Ganocephala, Glauconia, Gymnarthria, Ichthyopterygia, Ischyrotherium, Isocampe, Kintneria, Macelognatha, Omosauria, Oolithes, Ornithocephala, Parareptilia, Placodontomorpha, Plectropterna, Proganosauromorpha, Pythonomorpha, Rhamphosauria, Rhizodonta, Sauranodonta, Streptosauria, Theromorpha, Tocosauria, Triaenopus
Subtaxa: Amblypus, Ancyropus, Australochelys, Chengyuchelyidae, Chinlechelys, Condorchelys, Eileanchelys, Heckerochelyidae, Heckerochelys, Helcura, Indochelys, Kayentachelys, Meiolaniformes, Mongolochelyidae, Naomichelys, Odontochelyidae, Odontochelys, Palaeochersis, Platycheloides, Proganochelys, Proterochersidae, Proterochersis, Saurischiocomes, Sichuanchelyidae, Spoochelys, Testudines, Testudoolithidae