Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Order) Cathayornithiformes - (Family) Cathayornithidae

Included, by definition, in node-based clade

Ornithothoraces (Clade) Chiappe 1995

Ref: P.C. Sereno, 1998: table 4 (p. 65).

Included, by definition, in branch-based clade

†Enantiornithes (Clade) Walker 1981 [Sereno 1998]		Ref: L.M. Chiappe, 2001: [126] (fig. 1).
†Enantiornithes (Clade) Walker 1981 [Sereno 1998]		Ref: P.C. Sereno, 1998: table 4 (p. 65).
†Euenantiornithes (Clade) Chiappe 2002		Ref: M.P. Martyniuk, 2012: 179 (Chiappe, 2002).

Excluded, by definition, from branch-based clade

Euornithes (Clade) Sereno 1998

Ref: P.C. Sereno, 1998: table 4 (p. 65).

Subsequent positions

†Concornithidae (Family) Kurochkin, 1996

Ref: E.N. Kurochkin, 1996: 49.

Current position

†Cathayornithidae (Family) Zhou, Jin & Zhang, 1992

Ref: Z. Zhou & F. Zhang, 2006: table 1.

Alternative positions

†Concornithidae (Family) Kurochkin, 1996	Ref: E.N. Kurochkin, 1996: 49. [new position]
†Enantiornithes (Clade) Walker 1981 [Sereno 1998]	Ref: L.M. Chiappe, 2001: [126] (fig. 1).
†Euenantiornithes (Clade) Chiappe 2002	Ref: K. Padian, 2004: fig. 11.8.
†Euenantiornithes (Superorder) Chiappe, 2002	Ref: K. Padian, 2004: fig. 11.8. [implicit]

Historical positions

†Cathayornithidae (Family) Zhou, Jin & Zhang, 1992	Ref: Z. Zhou & F. Zhang, 2006: table 1.
†Euenantiornithes (Clade) Chiappe 2002	Ref: K. Padian, 2004: table 11.1 (p. [214]), fig. 11.8.
†Enantiornithes (Clade) Walker 1981 [Sereno 1998]	Ref: L.M. Chiappe, 2001: [126] (fig. 1).
†Concornithidae (Family) Kurochkin, 1996	Ref: E.N. Kurochkin, 1996: 3, 49. [new position]

Number of Subtaxa

2025	Available in Systema Naturae 2000	†1s
1989-present	Systema Naturae 2000	[; †1s]
2006	Z. Zhou & F. Zhang: table 1	[; †1s]
2006	Z. Zhou & F. Zhang: table 1	[; †1s]
2004	K. Padian	[; †1s]