Concise hierarchy

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

Subsequent positions

†Hadrosauroidea (Superfamily) Cope, 1869

Ref: P. Sereno, 1986: 252.

Current position

†Hadrosauroidea (Superfamily) Cope, 1869

Ref: P. Sereno, 1986: 252. [new position]

Alternative positions

†Euornithopoda (Clade) Sereno 1986	Ref: M.J. Benton, 2005: 398.
†Ornithopoda (Order) Marsh, 1881	Ref: G. Olshevsky, 1991: 170.
†Ornithopoda (Suborder) Marsh, 1871	Ref: D. Lambert & the Diagram Group, 1991(1997): 109.
†Styracosterna (Clade) Sereno 1986	Ref: M.J. Benton, 1990: fig. 1.5.

Historical positions

†Euornithopoda (Clade) Sereno 1986	Ref: M.J. Benton, 2005: 398, box 8.5.
†Ornithopoda (Suborder) Marsh, 1871	Ref: D. Lambert & the Diagram Group, 1991(1997): 109, 156.
†Ornithopoda (Suborder) Marsh, 1871	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
†Ornithopoda (Order) Marsh, 1881	Ref: G. Olshevsky, 1991: 170.
†Styracosterna (Clade) Sereno 1986	Ref: M.J. Benton, 1990: fig. 1.5.
†Ornithopoda (Suborder) Marsh, 1871	Ref: B. Gardiner et al., 1989: 302.
†Ornithopoda (Suborder) Marsh, 1871	Ref: R.L. Carroll, 1988: App. (p. 622).
†Hadrosauroidea (Superfamily) Cope, 1869	Ref: P. Sereno, 1986: 252. [new position]
†Ornithopoda (Suborder) Marsh, 1871	Ref: B. Grzimek et al., 1973 (1971): 596.

Number of Subtaxa

2026	Available in Systema Naturae 2000	†32g;5s
1989-present	Systema Naturae 2000	[; †32g]
1991(1997)	D. Lambert & the Diagram Group: 156	[; †[<]27g]
1991	G. Olshevsky: 170	†24(17)[26]g;40(26)s
1988	R.L. Carroll: App. (p. 622)	[; †26g]