Concise hierarchy

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

Subsequent positions

Polymixiacea (Division) Wiley & Johnson, 2010

Ref: E.O. Wiley & G.D. Johnson, 2010: 147.

Current position

Polymixiipterygii (Division)

Ref: R. van der Laan, 2018: 73.

Alternative positions

Acanthomorpha ([unranked]) Rosen, 1973	Ref: M.J. Benton, 2005: 392.
Actinopteri (Class) Cope, 1871	Ref: R. van der Laan et al., 2021: (4 Feb 2025); ECoF(4 Feb 2025).
Actinopterygii (Class) Woodward, 1891	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 31.
Actinopterygii (Subclass) Woodward, 1891	Ref: R.A. Fritzsche, 1982: 886.
Osteichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 312.
Paracanthopterygii (Superorder) Greenwood, Rosen, Weitzman & Myers, 1966	Ref: J.S. Nelson et al., 2016: 285; Nelson et al., 2016: fig. (p. 279).
Polymixiacea (Division) Wiley & Johnson, 2010	Ref: E.O. Wiley & G.D. Johnson, 2010: 127. [new position]
Polymixiomorpha (Superorder)	Ref: J.S. Nelson, 2006: 230.

Historical positions

Polymixiipterygii (Division)	Ref: R. van der Laan, 2018: 73.
Polymixiipterygii (Division)	Ref: R. Betancur-R et al., 2017: 21, fig. 1.
Paracanthopterygii (Superorder) Greenwood, Rosen, Weitzman & Myers, 1966	Ref: J.S. Nelson et al., 2016: 285-286, fig. (p. 279).
Actinopterygii (Class) Woodward, 1891	Ref: W.N. Eschmeyer, 2004-2016: 24 Jan 2006.
Actinopterygii (Class) Woodward, 1891	Ref: W.N. Eschmeyer & J.D. Fong, 2011: 31.
Polymixiacea (Division) Wiley & Johnson, 2010	Ref: E.O. Wiley & G.D. Johnson, 2010: 127, 147. [new position]
Polymixiomorpha (Superorder)	Ref: J.S. Nelson, 2006: 230-231.
Acanthomorpha ([unranked]) Rosen, 1973	Ref: M.J. Benton, 2005: 392, box 7.6.
Osteichthyes (Class) Huxley, 1880	Ref: J.J. Sepkoski Jr., 2002: 312.
Osteichthyes (Class) Huxley, 1880	Ref: N. Bailly et al., 2001: 365.
Actinopterygii (Class) Woodward, 1891	Ref: W.N. Eschmeyer, 1998: 2466.
Actinopterygii (Subclass) Woodward, 1891	Ref: R.A. Fritzsche, 1982: 886-887; 1115.

Number of Subtaxa

2025	Available in Systema Naturae 2000	1f;1g;10s; †3f;9g
1989-present	Systema Naturae 2000: 24 Jun 2025	[1f;1g;10s; †3f]
2018	R. van der Laan: 73	[1f; †3f]
2017	R. Betancur-R et al.: 21	[1f]
2016	J.S. Nelson et al.: 286	[1f]
2004-2016	W.N. Eschmeyer	[1f]
2011	W.N. Eschmeyer & J.D. Fong: 31	1f
2010	E.O. Wiley & G.D. Johnson: 147	1f;[1g]
1998	W.N. Eschmeyer	1f
1982	R.A. Fritzsche: 886	1f;1g;3s