Concise hierarchy

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

Current position

Hexanchiformes (Order) Compagno, 1973

Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.

Alternative positions

Hexanchoidea (Suborder)	Ref: R.L. Carroll, 1988: 599.
Hexanchoidei (Suborder) (Hay, 1902)	Ref: J.D. McEachran, 1982: 833.
Notidanoidei (Suborder)	Ref: B. Grzimek et al., 1974: 532.
Opistharthri (Suborder)	Ref: D.S. Jordan, 1923: 97.

Historical positions

Hexanchiformes (Order) Compagno, 1973	Ref: W.N. Eschmeyer, 2004-2016: 24 Jan 2006.
Hexanchiformes (Order) Compagno, 1973	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.
Hexanchiformes (Order) Compagno, 1973	Ref: J.S. Nelson, 2006: 65.
Hexanchiformes (Order) Compagno, 1973	Ref: N. Bailly et al., 2001: 358.
Hexanchiformes (Order) Compagno, 1973	Ref: 2000
Hexanchiformes (Order) Compagno, 1973	Ref: L.J.V. Compagno, 1999: 10, 12.
Hexanchiformes (Order) Compagno, 1973	Ref: 1998
Hexanchiformes (Order) Compagno, 1973	Ref: W.N. Eschmeyer, 1998: [2449].
Hexanchiformes (Order) Compagno, 1973	Ref: L.J.V. Compagno et al., 1989
Hexanchoidea (Suborder)	Ref: R.L. Carroll, 1988: 599.
Hexanchiformes (Order) Compagno, 1973	Ref: L.J.V. Compagno, 1984: 15-17.
Hexanchoidei (Suborder) (Hay, 1902)	Ref: J.D. McEachran, 1982: 833; 1113.
Hexanchiformes (Order) Compagno, 1973	Ref: T.I. Storer et al., 1979
Notidanoidei (Suborder)	Ref: B. Grzimek et al., 1974: 532.
Opistharthri (Suborder)	Ref: D.S. Jordan, 1923: 97.

Number of Subtaxa

2025	Available in Systema Naturae 2000	3g;4s
1989-present	Systema Naturae 2000	3g;4s
2011	W.N. Eschmeyer & J.D. Fong: 26	3g;4s
1999	L.J.V. Compagno: 12	3g;4s
1998	W.N. Eschmeyer	[6ng]
1989	L.J.V. Compagno et al.	3g4s
1984	L.J.V. Compagno	3g4s
1984	L.J.V. Compagno:	[3g;4s]
1982	J.D. McEachran	3g;[>]4s