Concise hierarchy

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

Subsequent positions

Xenosauroidea (Superfamily) Cope, 1866

Ref: N. Vidal & S.B. Hedges, 2009: 133.

Current position

Xenosauroidea (Superfamily) Cope, 1866

Ref: N. Vidal & S.B. Hedges, 2009: 133. [new position]

Alternative positions

Anguimorpha (Infraorder) Fürbringer, 1900	Ref: B. Grzimek et al., 1973 (1971): 611.
Anguimorpha ([unranked]) Fürbringer, 1900	Ref: R.A. Pyron et al., 2013: fig. 1.
Anguinomorpha (Infraorder)	Ref: W.E. Duellman, 1982: 962.
Anguoidea (Superfamily) Gray, 1825	Ref: R.L. Carroll, 1988: 617.
Diploglossa (Infraorder) Cope, 1864	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.

Historical positions

Anguimorpha ([unranked]) Fürbringer, 1900	Ref: R.A. Pyron et al., 2013: 47, fig. 1.
Xenosauroidea (Superfamily) Cope, 1866	Ref: N. Vidal & S.B. Hedges, 2009: 133, fig. 2. [new position]
Sauria (Suborder) McCartney, 1802	Ref: 1998
Diploglossa (Infraorder) Cope, 1864	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
Sauria (Suborder) McCartney, 1802	Ref: 1995
Anguoidea (Superfamily) Gray, 1825	Ref: R.L. Carroll, 1988: 617.
Anguinomorpha (Infraorder)	Ref: W.E. Duellman, 1982: 962.
Sauria (Suborder) McCartney, 1802	Ref: T.I. Storer et al., 1979

Number of Subtaxa

2024	Available in Systema Naturae 2000	1g;10s; †2g
1989-present	Systema Naturae 2000: 25 Feb 2017	[1g;10s; †2g]
2016	P. Uetz et al.: 16 Aug 2016	[1g;10s]
2013	R.A. Pyron et al.: 47	[1g]
[1995-]2000	P. Uetz	5s
1982	W.E. Duellman: 962	2sf;[2g;4s]