Concise hierarchy

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

Phylogeny

Branch-based clade		Ref: S.J. Nesbitt, 2011: 207 ("Stem") (sensu Sereno, 2005).
Reference phylogeny [PhyloCode]		Ref: S.J. Nesbitt, 2011: fig. 52. [inferred]

Defined by included taxon (and all taxa more closely related to it than to the excluded taxon)

†Pterodactylus antiquus (Sömmerring, 1812)

Ref: S.J. Nesbitt, 2011: 207 (sensu Sereno, 2005).

Defined by excluded taxon

Passer domesticus (Linnaeus, 1758)

Ref: S.J. Nesbitt, 2011: 207 (sensu Sereno, 2005).

Generic clade

†Pterosauromorpha (Clade) Kuhn-Schnyder & Rieber 1984 [Padian 1997]

Ref: S.J. Nesbitt, 2011: 207 (sensu Sereno, 2005).

Current position

Ornithodira (Clade) Gauthier 1986

Ref: S.J. Nesbitt, 2011: 207.

Alternative positions

Avemetatarsalia (Clade) Benton 1999

Ref: P.C. Sereno, 2005: [8 Mar 2016].

Historical positions

Ornithodira (Clade) Gauthier 1986	Src: S.J. Nesbitt, 2011: 207, fig. 52.
Avemetatarsalia (Clade) Benton 1999	Src: P.C. Sereno, 2005: tables.php [8 Mar 2016].