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Taxon: Species Sphenodon punctatus (Gray, 1842) - tuatara (reptile)

Entity:

Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Order) Rhynchocephalia - (Family) Sphenodontidae

Included, by definition, in branch-based clade

Rhynchocephalia (Clade) Günther 1867 [Gauthier, Estes & de Queiroz 1988]

Ref: D.G. DeMar Jr. et al., 2022: 4.

Excluded, by definition, from branch-based clade

†*Eilenodontinae* (Clade) Rasmussen & Callison 1981 [Simões, Caldwell & Pierce 2020]		Ref: D.G. DeMar Jr. et al., 2022: 5.
†*Leptorhynchia* (Clade) DeMar, Jones & Carrano 2022		Ref: D.G. DeMar Jr. et al., 2022: 5, 49.

Current position

Sphenodon (Genus) Gray, 1831

Ref: D.G. DeMar Jr. et al., 2022: 47; DeMar et al., 2022: fig. 26.

Historical positions

*Sphenodon* (Genus) Gray, 1831	Ref: D.G. DeMar Jr. et al., 2022: 47, figs. 24A, 25, 26.
*Sphenodon* (Genus) Gray, 1831	Ref: W.E. Duellman, 1982: 958; pl.140.
*Sphenodon* (Genus) Gray, 1831	Ref: B. Grzimek et al., 1973 (1971): 598.

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Last updated: 28 Aug 2026