Concise hierarchy

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

Current position

Squalomorphi (Superorder)

Ref: J.S. Nelson, 2006: 69.

Alternative positions

Chondrichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 302.
Elasmobranchii (Subclass) Bonaparte, 1838	Ref: [Anonymous], 1998
Elasmobranchii (Class) Bonaparte, 1838	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.
Hypnosqualea (Superorder) Carvalho & Maisey, 1996	Ref: M.J. Benton, 2005: 390.
Hypnosqualea ([unranked])	Ref: M.J. Benton, 2005: 390. [implicit]
Squalomorphii (Superorder) (Compagno, 1973)	Ref: L.J.V. Compagno, 1999: 9.

Historical positions

Elasmobranchii (Class) Bonaparte, 1838	Ref: W.N. Eschmeyer, 2004-2016: 24 Jan 2006.
Elasmobranchii (Class) Bonaparte, 1838	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.
Squalomorphi (Superorder)	Ref: J.S. Nelson, 2006: 52, 69.
Hypnosqualea (Superorder) Carvalho & Maisey, 1996	Ref: M.J. Benton, 2005: 390.
Chondrichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 302.
Squalomorphii (Superorder) (Compagno, 1973)	Ref: L.J.V. Compagno, 1999: 9.
Elasmobranchii (Subclass) Bonaparte, 1838	Ref: 1998
Elasmobranchii (Class) Bonaparte, 1838	Ref: W.N. Eschmeyer, 1998: 2450.
Neoselachii (Subcohort) Compagno, 1977	Ref: L.J.V. Compagno et al., 1989
Neoselachii (Subcohort) Compagno, 1977	Ref: L.J.V. Compagno, 1984: 130.
Squalomorphii (Superorder) (Compagno, 1973)	Ref: J.D. McEachran, 1982: 834.

Number of Subtaxa

2024	Available in Systema Naturae 2000	1f;2g;7s
1989-present	Systema Naturae 2000: 27 Dec 2013	[1f;2g;7s]
2004-2016	W.N. Eschmeyer	[1f]
2011	W.N. Eschmeyer & J.D. Fong: 26	1f
1999	L.J.V. Compagno	[1f;2g;5s]
1998	W.N. Eschmeyer	1f
1989	L.J.V. Compagno et al.	1f>6s
1984	L.J.V. Compagno	1f2g5s
1984	L.J.V. Compagno:	[1f;2g;5s]
1982	J.D. McEachran: 834	1f;2g;5-6s