Concise hierarchy

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

Current position

Cochliodontomorpha ([unranked])

Ref: J.S. Nelson, 2006: 45.

Alternative positions

Chondrichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 304.
Holocephali (Subclass) Bonaparte, 1832	Ref: R.L. Carroll, 1988: 600.
Holocephali (Superorder) Bonaparte, 1831	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 621).
Holocephali (Class) Bonaparte, 1832	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 27.
Holocephalii (Subclass)	Ref: J.D. McEachran, 1982: 857.

Historical positions

Holocephali (Class) Bonaparte, 1832	Ref: W.N. Eschmeyer, 2004-2016: 24 Jan 2006.
Holocephali (Class) Bonaparte, 1832	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 27.
Cochliodontomorpha ([unranked])	Ref: J.S. Nelson, 2006: 45.
Chondrichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 304.
Chondrichthyes (Class) Huxley, 1880	Ref: N. Bailly et al., 2001: 360.
Holocephali (Class) Bonaparte, 1832	Ref: W.N. Eschmeyer, 1998: 2452.
Holocephali (Subclass) Bonaparte, 1832	Ref: 1998
Holocephali (Subclass) Bonaparte, 1832	Ref: L.J.V. Compagno et al., 1989
Holocephali (Subclass) Bonaparte, 1832	Ref: R.L. Carroll, 1988: 600.
Holocephali (Superorder) Bonaparte, 1831	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 621).
Holocephalii (Subclass)	Ref: J.D. McEachran, 1982: 857.
Holocephali (Subclass) Bonaparte, 1832	Ref: T.I. Storer et al., 1979

Number of Subtaxa

2024	Available in Systema Naturae 2000	3f;6g;42s; †3f;15g;3s
1989-present	Systema Naturae 2000	[3f;6g;42s; †3f]
2004-2016	W.N. Eschmeyer	[3f]
2011	W.N. Eschmeyer & J.D. Fong: 27	3f
1998	W.N. Eschmeyer	3f
1988	R.L. Carroll: 601	[3f; †1f]
1982	J.D. McEachran: 857	3f;[6g];32-34s
1979	T.I. Storer et al.	25s