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Under construction
Branch-based clade: †Neoceratopsia Sereno 1986 (dinosaur)
 Entity: 

Concise hierarchy

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

Phylogeny

Branch-based clade Ref: P.C. Sereno, 1998: table 4 (p. 62).

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

†Triceratops (Genus) Marsh, 1889 Ref: P.C. Sereno, 1998: table 4 (p. 62).

Defined by excluded taxon

†Psittacosaurus (Genus) Osborn, 1923 Ref: P.C. Sereno, 1998: table 4 (p. 62).

Current position

†Ceratopsia (Infraorder) Marsh, 1890 [implicit]

Alternative positions

†Ceratopsia (Clade) Marsh 1890 Ref: P.C. Sereno, 1998: table 4 (p. 62).

Historical positions

†Ceratopsia (Clade) Marsh 1890 Ref: P.C. Sereno, 1998: table 4 (p. 62), fig. 6.

Number of Subtaxa

2025 Available in Systema Naturae 2000 †1f;6g
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Last updated: 21 Sep 2025