Concise hierarchy

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

Current position

Cyclostomata (Class) Richards

Ref: J.S. Nelson, 2006: 22. [indirect]

Alternative positions

Agnatha (Class) Cope, 1889	Ref: N. Bailly et al., 2001: 358.
†Cephalaspidomorphi (Class) Moy-Thomas & Mile, 1971	Ref: J.J. Sepkoski Jr., 2002: 298.
Mixini (Class)	Ref: [Anonymous], 1995
Myxini (Class) (Jaekel, 1911)	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.
Myxinoidea (Subclass)	Ref: W.N. Eschmeyer, 1998: 2449. [indirect]

Historical positions

Myxini (Class) (Jaekel, 1911)	Ref: W.N. Eschmeyer, 2004-2016: 24 Jan 2006.
Myxini (Class) (Jaekel, 1911)	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 26.
Myxini (Class) (Jaekel, 1911)	Ref: J.S. Nelson, 2006: 22.
†Cephalaspidomorphi (Class) Moy-Thomas & Mile, 1971	Ref: J.J. Sepkoski Jr., 2002: 298.
Agnatha (Class) Cope, 1889	Ref: N. Bailly et al., 2001: 358.
Mixini (Class)	Ref: 2000
Myxini (Class) (Jaekel, 1911)	Ref: W.N. Eschmeyer, 1998: [2449].
Mixini (Class)	Ref: 1998
Agnatha (Class) Cope, 1889	Ref: R.L. Carroll, 1988: 596.
Agnatha (Class) Cope, 1889	Ref: R.A. Fritzsche & L. Fuiman, 1982: 831.
Cyclostomata (Class) Richards	Ref: T.I. Storer et al., 1979

Number of Subtaxa

2024	Available in Systema Naturae 2000	1f;5g;76s; †1g;1s
1989-present	Systema Naturae 2000	[1f;5g;76s]
2004-2016	W.N. Eschmeyer	[1f]
2011	W.N. Eschmeyer & J.D. Fong: 26	1f
1998	W.N. Eschmeyer	[1f;20ng]
1988	R.L. Carroll: 596	[1f]
1982	R.A. Fritzsche & L. Fuiman: 831	1f;5g;32?s
1979	T.I. Storer et al.	21s