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Under construction
Branch-based clade: †Hypsilophodontidae Dollo 1882 (dinosaur)
 Entity: 

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)

†Hypsilophodon (Genus) Huxley, 1870 Ref: P.C. Sereno, 1998: table 4 (p. 61).

Defined by excluded taxon

†Parasaurolophus (Genus) Parks, 1922 Ref: P.C. Sereno, 1998: table 4 (p. 61).

Current position

†Euornithopoda (Clade) Sereno 1986 Ref: P.C. Sereno, 1998: table 4 (p. 61).

Historical positions

†Euornithopoda (Clade) Sereno 1986 Ref: P.C. Sereno, 1998: table 4 (p. 61), fig. 5B.
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Last updated: 28 Aug 2026