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 Notosphenos finisterre Sphenofontis Tika

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Ecology: planktonic suspension feeder

Distribution:

• Cretaceous of Argentina (6 collections)

• Jurassic of Germany (1), United States (1: Arizona)

Total: 8 collections each including a single occurrence

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