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Sphenodontinae
Taxonomy
Sphenodontinae was named by Cope (1871). It is extant.
It was assigned to Synapsida by Gauthier et al. (1989); to Rhynchocephalia by Jones et al. (2009), Apesteguia and Jones (2012); and to Sphenodontidae by Kuhn (1966), Reynoso (1996), Villa et al. (2021), Simões et al. (2022), Agnolín et al. (2024).
It was assigned to Synapsida by Gauthier et al. (1989); to Rhynchocephalia by Jones et al. (2009), Apesteguia and Jones (2012); and to Sphenodontidae by Kuhn (1966), Reynoso (1996), Villa et al. (2021), Simões et al. (2022), Agnolín et al. (2024).
Subtaxa