Concise hierarchy

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

Current position

Testudinata (Subclass) Oppel, 1811

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 52).

Alternative positions

Anapsida (Subclass) Osborn, 1903	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
†Procolophonia (Clade) Seeley 1888 [Laurin & Reisz 1995]	Ref: M.J. Benton, 2005: box 5.1.
Reptilia (Class) Linnaeus, 1758	Ref: E.J. van Nieukerken, 2010: 293; IRMNG[5 Jun 2025].

Historical positions

Testudinata (Subclass) Oppel, 1811	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 52).
†Procolophonia (Clade) Seeley 1888 [Laurin & Reisz 1995]	Ref: M.J. Benton, 2005: 395, boxes 5.1, 8.8.
Tetrapoda (Clade) Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.	Ref: J. van der Land, 2001: 375. [rough position]
Anapsida (Subclass) Osborn, 1903	Ref: 1998
Anapsida (Subclass) Osborn, 1903	Ref: 1995
Anapsida (Subclass) Osborn, 1903	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
Anapsida (Subclass) Osborn, 1903	Ref: W.E. Duellman, 1982: 955.
Anapsida (Subclass) Osborn, 1903	Ref: B. Grzimek et al., 1973 (1971): 584.

Number of Subtaxa

2025	Available in Systema Naturae 2000	14f;93g;343s;171ss; ‡1g;10s;3ss; †15f;30g;24s
1989-present	Systema Naturae 2000: 6 Apr 2017	[14f;93g;343s;171ss]
2014	P.P. van Dijk et al.: 339; 330	2so;4Sf;14f;13sf;94[93]g;3sg;335[327]s;453[s]s;[171ss; ‡1g;8s;3ss]
[1995-]2000	P. Uetz	294s
1982	W.E. Duellman: 955	1so;11f;72g;222s
1973 (1971)	B. Grzimek et al.: 590	[12f; †9f]