Original entries

Rhinatrematidae (Family) Nussbaum, 1977
Scolecomorphidae (Family) Taylor, 1969

Current position

Lissamphibia (Infraclass) Haeckel, 1866

Ref: M.J. Benton, 2005: 394.

Alternative positions

Amphibia (Class) Gray, 1825	Ref: D.R. Frost, 2010: 22 Nov 2010.
Caeciliomorpha (Subclass) Kuhn, 1968	Ref: O. Kuhn, 1972: 68.
Lissamphibia (Subclass) Haeckel, 1866	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
Phractamphibia (Subclass) Haeckel, 1866	Ref: E.R. Lankester, 1877: 452.

Historical positions

Lissamphibia (Infraclass) Haeckel, 1866	Ref: M.J. Benton, 2005: 394, box 4.5.
Lissamphibia (Subclass) Haeckel, 1866	Ref: 1998
modern amphibian orders ([unranked])	Ref: R.L. Carroll, 1988: 614.
Lissamphibia (Subclass) Haeckel, 1866	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
Lissamphibia (Subclass) Haeckel, 1866	Ref: W.E. Duellman, 1982: 954.
Gymnophiona (Subclass) (Rafinesque, 1814)	Ref: T.I. Storer et al., 1979
Caeciliomorpha (Subclass) Kuhn, 1968	Ref: B. Grzimek, 1973-1975
Caeciliomorpha (Subclass) Kuhn, 1968	Ref: O. Kuhn, 1972: 68.
Phractamphibia (Subclass) Haeckel, 1866	Ref: E.R. Lankester, 1877: 452.

Number of Subtaxa

2024	Available in Systema Naturae 2000	3f;33g;186s; †1f
1989-present	Systema Naturae 2000: 23 Feb 2014	[3f;33g;185s]
2010	D.R. Frost: 22 Nov 2010	[3f;33g];183s
2007	D.R. Frost: 20 Mar 2007	[3f;33g];173s
2006	D.R. Frost et al.	[3f;33g]
1988	R.L. Carroll: 614	[5f]
1982	W.E. Duellman	5f;33g;154s
1979	T.I. Storer et al.	~165s