PaleoDB taxon number: 37483
Alternative spelling: Anaspida
Parent taxon: Reptilia according to O. W. M. Kuhn 1966
Sister taxa: Amblyglossae, Anhomoiichnium, Apatomerus, Archaeosauria, Atremata, Chelydosauria, Cunichnoides, Deleteme, Dimetropus, Diplotremata, Dipnoa, Dolichobrachium, Dravidosaurus, Dravidosaurus blanfordi, Embolophorus, Enaliosauria, Eupalamopus, Eureptilia, Glauconia, Herpetichnus, Holosauria, Hyperosauria, Ichthyosaurus inexpectus, Ischyrotherium, Isocampe, Kintneria, Lyognatha, Macelognatha, Metamosaurus, Monopnoa, Monozygocrotapha, Onychichnium, Oolithes, Ornithocephala, Pantestudines, Parareptilia, Pessopteryx arctica, Pessopteryx pinguis, Placodontomorpha, Plesiosaurus doedicomus, Poeciloglyptica, Proganosauromorpha, Proreptilia, Prosauria, Protorosauria, Puercosaurus, Puercosaurus obtusidens, Rhamphosauria, Rhizodonta, Rhynchosauroidae, Rigalites, Seps, Streptosauria, Svalbardosaurus, Svalbardosaurus crassidens, Testudinata, Theromorpha, Tocosauria, Triaenopus, Zhengichnus
Subtaxa: Chelonomorpha
Ecology: