Subfamily Sphenodontinae Cope 1871 (rhynchocephalian)
Reptilia - Rhynchocephalia - Sphenodontidae
Parent taxon: Sphenodontidae according to T. R. Simões et al. 2022
See also Agnolín et al. 2024, Apesteguia and Jones 2012, Gauthier et al. 1989, Jones et al. 2009, Kuhn 1966, Reynoso 1996 and Villa et al. 2021
Sister taxa: Ankylosphenodon, Brachyrhinodontinae, Cynosphenodon, Derasmosaurus, Eilenosaurus, Elachistosuchus, Glevosaurus, Leptosaurus, Oenosaurus, Opisthodontia, Paleollanosaurus, Piocormus, Scharschengia, Sigmala, Simila, Sphenodon, Sphenovipera, Theretairus, Zapatadon
Subtaxa: Navajosphenodon Notosphenos Sphenofontis Tika
Ecology:
Distribution: