Concise hierarchy

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

Current position

†Aspidorhynchei (Division) Nelson, Grande & Wilson, 2016

Ref: R. van der Laan, 2018: 57.

Alternative positions

†Aspidorhynchei (Subdivision) Nelson, Grande & Wilson, 2016	Ref: J.S. Nelson et al., 2016: 127.
Neopterygii (Infraclass) Regan, 1923	Ref: R.L. Carroll, 1988: 603.
Neopterygii (Subclass) Regan, 1923	Ref: J.S. Nelson, 2006: 99.

Historical positions

†Aspidorhynchei (Division) Nelson, Grande & Wilson, 2016	Ref: R. van der Laan, 2018: 57.
†Aspidorhynchei (Subdivision) Nelson, Grande & Wilson, 2016	Ref: J.S. Nelson et al., 2016: 127.
Neopterygii (Subclass) Regan, 1923	Ref: E.O. Wiley & G.D. Johnson, 2010: 128. [inferred rank] [implicit]
Neopterygii (Subclass) Regan, 1923	Ref: J.S. Nelson, 2006: 99; 96.
Actinopterygii (Class) Woodward, 1891	Ref: 1998
Neopterygii (Infraclass) Regan, 1923	Ref: R.L. Carroll, 1988: 603.

Number of Subtaxa

2025	Available in Systema Naturae 2000	†1f;3g
1989-present	Systema Naturae 2000: 25 May 2024	[; †1f;3g]
2018	R. van der Laan: 57	[; †1f]
2016	J.S. Nelson et al.: 127	[; †1f]
2003	W.E. Bemis: 24 Jun 2003	[; †1f;3g]
1988	R.L. Carroll: 603	[; †1f]