Parent taxon: Reptilia according to O. P. Hay 1902
Sister taxa: Amblyglossae, Anapsida, Anhomoiichnium, Apatomerus, Archaeosauria, Atremata, Cunichnoides, Dimetropus, Diplotremata, Dipnoa, Dolichobrachium, Dravidosaurus, Dravidosaurus blanfordi, Embolophorus, Enaliosauria, Eureptilia, Glauconia, Holosauria, Hyperosauria, Ichthyosaurus inexpectatus, Ischyrotherium, Isocampe, Kintneria, Lyognatha, Macelognatha, Metamosaurus, Monopnoa, Monotreta, Monozygocrotapha, Onychichnium, Oolithes, Ornithocephala, Pantestudines, Parareptilia, Pessopteryx arctica, Pessopteryx pinguis, Placodontomorpha, Plesiosaurus doedicomus, Poeciloglyptica, Polemarchus, Proganosauromorpha, Proreptilia, Prosauria, Protorosauria, Puercosaurus, Puercosaurus obtusidens, Rhamphosauria, Rhizodonta, Rhynchosauroidae, Saurichthys indicus, Saurophidia, Seps, Sillimanius, Squamata, Steropoides, Streptosauria, Svalbardosaurus, Svalbardosaurus crassidens, Testudinata, Theromorpha, Tocosauria
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Chelydosauria in the database