Invalid subtaxa: Haplodontosaurus Gilmore 1942 [nomen dubium], Haplodontosaurus excedens Gilmore 1928 [nomen dubium], Harpagosaurus excedens Gilmore 1928 [nomen dubium], Saniwa australis Ameghino 1899 [nomen dubium], Xestops gracilis Marsh 1872 [nomen dubium], Yabeinosaurus youngi Hoffstetter 1964 [nomen dubium]
Full reference: M. Oppel. 1811. Die Ordnungen, Familien und Gattungen der Reptilien als Prodom einer Naturgeschichte Derselben. Joseph Lindauer, München xii-86
Parent taxon: Lepidosauria according to K. -Q. Gao and R. C. Fox 1996
Sister taxa: Cargninia, Euposaurus, Gephyrosauridae, Paliguanidae, Sphenodonta
Subtaxa: Amphisbaenia, Anomalopsis, Ardeosaurus, Bavarisaurus, Cuencasaurus, Eichstaettisaurus, Eolacerta, Gekkonomorpha, Gerrhosauridae, Hoyalacerta, Huehuecuetzpalli, Iguania, Jucaraseps, Lacertilia, Lamiasaurus, Liushusaurus, Mosasauria, Olindalacerta, Paikasisaurus, Paramacellodidae, Paraplacosauriops, Parasaurillus, Parviraptor, Polyglyphanodontia, Pseudosaurillus, Sauria, Scandensia, Scincogekkonomorpha, Scleroglossa, Vialorophis, Yabeinosaurus
Ecology: