Concise hierarchy

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

Phylogeny

Branch-based clade

Ref: P.C. Sereno, 1998: table 4 (p. 61).

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

†Parasaurolophus (Genus) Parks, 1923

Ref: P.C. Sereno, 1998: table 4 (p. 61).

Defined by excluded taxon

†Heterodontosaurus (Genus) Crompton & Charig, 1962

Ref: P.C. Sereno, 1998: table 4 (p. 61).

Current position

†Ornithopoda (Infraorder) Marsh, 1881

Ref: M.J. Benton, 2005: box 8.5.

Alternative positions

†Ornithopoda (Clade) Marsh 1881

Ref: P.C. Sereno, 1998: table 4 (p. 61).

Historical positions

†Ornithopoda (Infraorder) Marsh, 1881	Ref: M.J. Benton, 2005: box 8.5.
†Ornithopoda (Clade) Marsh 1881	Ref: P.C. Sereno, 1998: 66, table 4 (p. 61), fig. 5B.
†Ornithopoda (Clade) Marsh 1881	Ref: M.J. Benton, 1990: fig. 1.5.

Number of Subtaxa

2024	Available in Systema Naturae 2000	†5f;59g;10s
1989-present	Systema Naturae 2000	[; †5f;60g]