Concise hierarchy

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

Included, by definition, in node-based clade

†Ceratopsidae (Clade) Marsh 1888		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Coronosauria (Clade) Sereno 1986		Ref: P.C. Sereno, 1998: table 4 (p. 62).
Dinosauria (Clade) Owen 1841 [Padian & May 1993], nom. cl. inval.		Ref: S.J. Nesbitt, 2011: 210 (Padian & May, 1993).
Dinosauria (Clade) Owen 1841 [Padian & May 1993], nom. cl. inval.		Ref: P.C. Sereno, 1998: table 4 (p. 61).
†Genasauria (Clade) Sereno 1986		Ref: P.C. Sereno, 1998: table 4 (p. 61).
†Marginocephalia (Clade) Sereno 1986		Ref: P.C. Sereno, 1998: table 4 (p. 62).

Included, by definition, in branch-based clade

†Ceratopsia (Clade) Marsh 1890		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Ceratopsinae (Clade) Abel 1919		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Ceratopsoidea (Clade) Hay 1902		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Neoceratopsia (Clade) Sereno 1986		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Neornithischia (Clade) Cooper 1985		Ref: P.C. Sereno, 1998: table 4 (p. 61).
†Ornithischia (Clade) Seeley 1887 [Padian & May 1993]		Ref: S.J. Nesbitt, 2011: 210 (Padian & May, 1993).
†Ornithischia (Clade) Seeley 1887 [Padian & May 1993]		Ref: P.C. Sereno, 1998: table 4 (p. 61).

Excluded, by definition, from branch-based clade

†Centrosaurinae (Clade) Lambe 1915		Ref: P.C. Sereno, 1998: table 4 (p. 62). [implicit]
†Pachycephalosauria (Clade) Maryañska & Osmólska 1974		Ref: P.C. Sereno, 1998: table 4 (p. 62).
†Protoceratopsidae (Clade) Granger & Gregory 1923		Ref: P.C. Sereno, 1998: table 4 (p. 62).
Saurischia (Clade) Seeley 1887 [Gauthier 1986], nom. cl. inval.		Ref: P.C. Sereno, 1998: table 4 (p. 63).
†Sauropodomorpha (Clade) Huene 1932 [Salgado et al. 1997]		Ref: A. Otero et al., 2015: table 1 (p. 590) (Sereno, 2007).
†Thyreophora (Clade) Nopcsa 1915		Ref: P.C. Sereno, 1998: table 4 (p. 61).

Current position

†Chasmosaurinae (Subfamily) Lambe, 1915

Ref: G. Olshevsky, 1991: 163; 5 Mar 2007.

Alternative positions

†Ceratopidae (Family)	Ref: B. Gardiner et al., 1989: 303.
†Ceratopsidae (Family) Marsh, 1888	Ref: D. Lambert & the Diagram Group, 1991(1997)

Historical positions

†Chasmosaurinae (Subfamily) Lambe, 1915	Ref: G. Olshevsky, 1991: 163.
†Ceratopidae (Family)	Ref: B. Gardiner et al., 1989: 303.
†Ceratopsidae (Family) Marsh, 1888	Ref: R.L. Carroll, 1988: App. (p. 622).
†Ceratopsia (Suborder) Marsh, 1890	Ref: T.I. Storer et al., 1979
†Ceratopsidae (Family) Marsh, 1888	Ref: B. Grzimek et al., 1973 (1971): 596.

Number of Subtaxa

2026

Available in Systema Naturae 2000

†3s