Ornithoscelida

Ornithoscelidans; Temporal range: ; Late Triassic–Present,
	A Triceratops horridus mounted skeleton (top) and a male house sparrow (Passer domesticus, bottom).
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Ornithoscelida; Huxley, 1870
Subgroups
	†Ornithischia; Theropoda;

Ornithoscelida (/ˌɔːrnɪθəˈsɛlɪdə/^[1]) is a proposed clade that includes various major groupings of dinosaurs. An order Ornithoscelida was originally proposed by Thomas Henry Huxley but later abandoned in favor of Harry Govier Seeley's division of Dinosauria into Saurischia and Ornithischia. The term was revived in 2017 after a new cladistic analysis by Baron et al.

^ Whitney, William Dwight (1897), The Century Dictionary: An Encyclopedic Lexicon of the English Language, vol. V, New York: The Century Co., p. 4158

Ornithoscelidans Temporal range: Late Triassic–Present,


A Triceratops horridus mounted skeleton (top) and a male house sparrow (Passer domesticus, bottom).
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Ornithoscelida Huxley, 1870
Subgroups
†Ornithischia Theropoda