Concise hierarchy

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

Current position

Squalomorphi (Superorder)

Ref: J.S. Nelson, 2006: 66.

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.
Squalea (Division) (Shirai, 1996)	Ref: M.J. Benton, 2005: 390.
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, 66.
Squalea (Division) (Shirai, 1996)	Ref: M.J. Benton, 2005: 390, box 7.2.
Chondrichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 302.
Chondrichthyes (Class) Huxley, 1880	Ref: N. Bailly et al., 2001: 359.
Chondrichthyes (Class) Huxley, 1880	Ref: 2000
Squalomorphii (Superorder) (Compagno, 1973)	Ref: L.J.V. Compagno, 1999: 9.
Elasmobranchii (Class) Bonaparte, 1838	Ref: W.N. Eschmeyer, 1998: 2450.
Elasmobranchii (Subclass) Bonaparte, 1838	Ref: 1998
Neoselachii (Subcohort) Compagno, 1977	Ref: L.J.V. Compagno et al., 1989
Neoselachii (Subcohort) Compagno, 1977	Ref: L.J.V. Compagno, 1984: 24.
Squalomorphii (Superorder) (Compagno, 1973)	Ref: J.D. McEachran, 1982: 833.
Elasmobranchii (Subclass) Bonaparte, 1838	Ref: T.I. Storer et al., 1979

Number of Subtaxa

2024	Available in Systema Naturae 2000	6f;24g;120s; †1g
1989-present	Systema Naturae 2000: 27 Dec 2013	[6f;24g;120s]
2004-2016	W.N. Eschmeyer	[4f]
2011	W.N. Eschmeyer & J.D. Fong: 26	4f
1999	L.J.V. Compagno	[7f;22g;97s]
1998	W.N. Eschmeyer	4f
1989	L.J.V. Compagno et al.	3f>83s
1984	L.J.V. Compagno	3f19g73s
1984	L.J.V. Compagno:	[3f;19g;73s]
1982	J.D. McEachran: 833	2f;[20g];65-75s
1979	T.I. Storer et al.	~250s