Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia

Current position

Diapsida (Clade) Osborn 1903 [Gauthier & de Queiroz 2020]

Ref: M.J. Benton, 2005: 395; Gauthier & de Queiroz, 2020: [1033]; Reisz et al., 2011: fig. 4. [implicit]

Alternative positions

†Araeoscelomorpha (Subclass) Kuhn, 1968	Ref: O. Kuhn, 1969: 19.
Diapsida (Subclass) Osborn, 1903	Ref: M.J. Benton, 2005: 395.
†Euryapsida (Subclass) Colbert, 1945	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623).
Reptilia (Class) Linnaeus, 1758	Ref: T. Rees, 2006-present: [5 Jun 2025]; IRMNG[5 Jun 2025].

Historical positions

Diapsida (Subclass) Osborn, 1903	Ref: M.J. Benton, 2005: 395, box 5.1.
†Euryapsida (Subclass) Colbert, 1945	Ref: 1998
†Euryapsida (Subclass) Colbert, 1945	Ref: 1995
†Euryapsida (Subclass) Colbert, 1945	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623).
†Euryapsida (Subclass) Colbert, 1945	Ref: T.I. Storer et al., 1979
†Araeoscelomorpha (Subclass) Kuhn, 1968	Ref: O. Kuhn, 1969: 19.

Number of Subtaxa

2025	Available in Systema Naturae 2000	†2f;2g;1s
1989-present	Systema Naturae 2000: 6 Jul 2017	[; †2f]
1969	O. Kuhn: 22	[; †2f]