Concise hierarchy

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

Phylogeny

Node-based clade

Ref: L.M. Chiappe, 2001: [126] (fig. 1). [implicit]

Defined by the most recent common ancestor (and all its descendants) of

†Confuciusornithidae (Clade) Hou, Zhou, Gu & Zhang 1995 [Chiappe et al. 1999]		Ref: L.M. Chiappe, 2001: [126] (fig. 1).
Neornithes (Clade) Gadow, 1893		Ref: L.M. Chiappe, 2001: [126] (fig. 1) ("modern birds").

Generic clade

Pygostylia (Clade) Chatterjee 1997 [Chiappe 2001]

Ref: L.M. Chiappe, 2001: [126] (fig. 1).

Current position

Aves (Subclass) Linnaeus, 1758

Ref: J.K. O'Connor et al., 2010: fig. 9. [implicit]

Alternative positions

Aves (Clade) Linnaeus 1758 [Gauthier 1986], nom. cl. inval.	Ref: K. Padian, 2004: fig. 11.8.
Aves (Class) Linnaeus, 1758	Ref: J.K. O'Connor et al., 2010: fig. 9.

Historical positions

Aves (Class) Linnaeus, 1758	Src: J.K. O'Connor et al., 2010: fig. 9.
Aves (Clade) Linnaeus 1758 [Gauthier 1986], nom. cl. inval.	Src: K. Padian, 2004: fig. 11.8.
Aves (Clade) Linnaeus 1758 [Gauthier 1986], nom. cl. inval.	Src: L.M. Chiappe, 2001: [126] (fig. 1).

Number of Subtaxa

2024	Available in Systema Naturae 2000	31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †25o;88f;349g;163s;3ss
1989-present	Systema Naturae 2000	[31o;201f;2135g;9609s]