Concise hierarchy

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

Original entries

†Alaskacephale (Genus) Sullivan, 2006

Subsequent entries

†Stenopelix (Genus) Meyer, 1857

Ref: T. Maryañska & H. Osmólska, 1974 [assumed]

Current position

†Pachycephalosauria (Infraorder) Maryañska & Osmólska, 1974

Ref: D. Lambert & the Diagram Group, 1991(1997) [implicit]

Alternative positions

†Ornithopoda (Suborder) Marsh, 1871	Ref: B. Grzimek et al., 1973 (1971): 596.
†Pachycephalosauria (Order) Maryañska & Osmólska, 1974	Ref: G. Olshevsky, 1991: 159.
†Pachycephalosauria (Suborder) Maryañska & Osmólska, 1974	Ref: D. Lambert & the Diagram Group, 1991(1997): 109.

Historical positions

†Pachycephalosauria (Order) Maryañska & Osmólska, 1974	Ref: R.M. Sullivan, 2006: 349-351; 347.
†Pachycephalosauria (Suborder) Maryañska & Osmólska, 1974	Ref: D. Lambert & the Diagram Group, 1991(1997): 109.
†Ornithopoda (Suborder) Marsh, 1871	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
†Pachycephalosauria (Order) Maryañska & Osmólska, 1974	Ref: G. Olshevsky, 1991: 159.
†Ornithopoda (Suborder) Marsh, 1871	Ref: B. Gardiner et al., 1989: 302.
†Pachycephalosauria (Suborder) Maryañska & Osmólska, 1974	Ref: R.L. Carroll, 1988: App. (p. 622).
†Ornithopoda (Suborder) Marsh, 1871	Ref: B. Grzimek et al., 1973 (1971): 596.

Number of Subtaxa

2026	Available in Systema Naturae 2000	†12g;16s
1989-present	Systema Naturae 2000	†15g;19s
2006	R.M. Sullivan	[; †14g;18s]
1991(1997)	D. Lambert & the Diagram Group	†~9g
1991	G. Olshevsky: 159	†9g;11(10)s
1988	R.L. Carroll: App. (p. 622)	[; †9g]