Concise hierarchy

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

Current position

Pan-Squamata (Clade) Gauthier & de Queiroz 2020

Ref: M.J. Benton, 2015: 439; de Queiroz & Gauthier, 2020: [1093]. [inferred]

Alternative positions

Lepidosauria (Clade) Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval.	Ref: N. Vidal & S.B. Hedges, 2009: 130.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: S.B. Hedges & N. Vidal, 2009: (383).
Lepidosauria (Superorder) Haeckel, 1866	Ref: M.J. Benton, 2005: 395.
Lepidosauria (Class) Haeckel, 1866	Ref: M.J. Benton, 2005: 395. [implicit]
Lepidosauriformes (Superorder) Gauthier, Estes & de Queiroz, 1988	Ref: M.J. Benton, 2015: 439.
Reptilia (Class) Linnaeus, 1758	Ref: J.J. Sepkoski Jr., 2002: 318; IRMNG[5 Jun 2025].

Historical positions

Reptilia (Class) Linnaeus, 1758	Ref: M. Böhme, 2010: 18.
Lepidosauria (Clade) Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval.	Ref: N. Vidal & S.B. Hedges, 2009: 130, fig. 3.
Lepidosauria (Superorder) Haeckel, 1866	Ref: M.J. Benton, 2005: 395, box 8.8.
Reptilia (Class) Linnaeus, 1758	Ref: J.J. Sepkoski Jr., 2002: 318.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: 1998
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: 1995
Lepidosauria (Superorder) Haeckel, 1866	Ref: R.L. Carroll, 1988: 617.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
Lepidosauria (Superorder) Haeckel, 1866	Ref: H.-P. Schultze et al., 1985: [1], 33.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: W.E. Duellman, 1982: 958.
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: T.I. Storer et al., 1979
Lepidosauria (Subclass) Duméril & Bibron, 1839	Ref: B. Grzimek et al., 1973 (1971): 598.

Number of Subtaxa

2025	Available in Systema Naturae 2000	81f;1090g;10,074s;387ss;1; ‡1g;6s; †23f;43g;22s
1989-present	Systema Naturae 2000: 25 Feb 2017	[81f;1090g;10,074s]
2016	P. Uetz et al.: 3 Oct 2016 (Aug 2016)	[10,078[10,073]s; ‡[5s]]
2009	N. Vidal & S.B. Hedges: 130, 135, figs. 2, 4, 5	[57f]
2005	M.J. Benton	[2so]
[1995-]1996	P. Uetz: 30 Dec 1996	[34f; †3f]
1988	R.L. Carroll: 618	[33f; †22f]
1982	W.E. Duellman: 958	3so;[33f]