Concise hierarchy

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

Current position

Ophidia ([unranked]) Brongniart, 1800

Ref: M.J. Benton, 2015: box 8.8 (p. 245). [indirect]

Alternative positions

Autarchoglossa ([unranked])	Ref: M.J. Benton, 2005: box 8.8. [alternative position]
Scleroglossa (Clade) Estes et al. 1988	Ref: M.J. Benton, 2005: box 8.8. [alternative position]
Squamata (Order) Oppel, 1811	Ref: M.J. Benton, 2005: 396.
Toxicofera ([unranked]) Vidal & Hedges, 2005	Ref: M.J. Benton, 2015: box 8.8 (p. 245).

Historical positions

Squamata (Order) Oppel, 1811	Ref: M.J. Benton, 2005: 396.
Scleroglossa (Clade) Estes et al. 1988	Ref: M.J. Benton, 2005: box 8.8. [alternative position]
Autarchoglossa ([unranked])	Ref: M.J. Benton, 2005: box 8.8. [alternative position]
Squamata (Order) Oppel, 1811	Ref: 1998
Squamata (Order) Oppel, 1811	Ref: 1995
Squamata (Order) Oppel, 1811	Ref: R.L. Carroll, 1988: 618.
Squamata (Order) Oppel, 1811	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623).
Squamata (Order) Oppel, 1811	Ref: H.-P. Schultze et al., 1985: 2, 46.
Squamata (Order) Oppel, 1811	Ref: W.E. Duellman, 1982: 963.
Squamata (Order) Oppel, 1811	Ref: O. Rieppel, 1979: 148.
Squamata (Order) Oppel, 1811	Ref: T.I. Storer et al., 1979
Squamata (Order) Oppel, 1811	Ref: B. Grzimek, 1973-1975

Number of Subtaxa

2024	Available in Systema Naturae 2000	29f;524g;3618s;257ss;1; ‡1g;2s; †6f;9g;6s
1989-present	Systema Naturae 2000: 25 Feb 2017	[29f;524g;3618s; †6f]
[1995-]2000	P. Uetz	2,953s
1988	R.L. Carroll: 618	[12f; †5f]
1982	W.E. Duellman: 963	3Sf;14f;418g;2267s
1979	T.I. Storer et al.	~2,500s