Concise hierarchy

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

Included, by definition, in node-based clade

Crurotarsi (Clade) Sereno & Arcucci 1990

Ref: S.J. Nesbitt, 2011: 192 (Sereno & Arcucci, 1990).

Current position

†Ornithosuchia (Order) Bonaparte, 1971

Ref: G. Olshevsky, 1991: 38; Paleofile[12 Jul 2026].

Alternative positions

†Carnosauria (Infraorder) Huene, 1920	Ref: B. Grzimek et al., 1973 (1971): 595; Uetz(30 Dec 1996).
Crurotarsi (Subdivision) Sereno & Arcucci, 1990	Ref: M.J. Benton, 2005: 396.
Crurotarsi (Clade) Sereno & Arcucci 1990	Ref: M.J. Benton, 2004: fig. 1.8A. [inferred rank]
Ornithosuchia ([unranked])	Ref: M.J. Benton, 1990: fig. 1.1.
†Ornithosuchia (Suborder) (Huene, 1908)	Ref: R.L. Carroll, 1988: App. (p. 619).
†Pseudosuchia (Suborder) Zittel, 1887-1890	Ref: B. Grzimek et al., 1973 (1971): 593.

Historical positions

Crurotarsi (Subdivision) Sereno & Arcucci, 1990	Ref: M.J. Benton, 2005: 396, box 6.1.
Crurotarsi (Clade) Sereno & Arcucci 1990	Ref: M.J. Benton, 2004: 14, fig. 1.8A. [out of scope (coherent)]
†Pseudosuchia (Suborder) Zittel, 1887-1890	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
†Carnosauria (Infraorder) Huene, 1920	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
†Ornithosuchia (Order) Bonaparte, 1971	Ref: G. Olshevsky, 1991: 38.
Ornithosuchia ([unranked])	Ref: M.J. Benton, 1990: fig. 1.1.
†Ornithosuchia (Suborder) (Huene, 1908)	Ref: B. Gardiner et al., 1989: 302.
†Ornithosuchia (Suborder) (Huene, 1908)	Ref: R.L. Carroll, 1988: App. (p. 619).
†Carnosauria (Infraorder) Huene, 1920	Ref: B. Grzimek et al., 1973 (1971): 595.
†Pseudosuchia (Suborder) Zittel, 1887-1890	Ref: B. Grzimek et al., 1973 (1971): 593.

Number of Subtaxa

2026	Available in Systema Naturae 2000	†5g;3s;1
1989-present	Systema Naturae 2000: 12 Jul 2026	[; †5g]
1991	G. Olshevsky: 38	†6(3)g;6(3)s
1988	R.L. Carroll: 619	[; †3g]