Saurischia

Saurischians; Temporal range: ; Late Triassic – Present, Possible Middle Triassic record
	Montage of six different representatives of saurischian dinosaurs.; 1st row (early saurischians):; Herrerasaurus ischigualastensis (herrerasaur),; Eodromaeus murphi (basal theropod);; 2nd row (theropods):; Pelecanus occidentalis,; Tyrannosaurus rex;; 3rd row (sauropodomorphs):; Apatosaurus louisae,; Plateosaurus engelhardti.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia; Seeley, 1888
Subgroups
Saurischians of; uncertain affinity
	†Alwalkeria; †Chindesaurus; †Daemonosaurus; †Eodromaeus; †Saltopus?; †Tawa;

Saurischia (/sɔːˈrɪskiə/ saw-RIS-kee-ə, meaning "reptile-hipped" from the Greek sauros (σαῦρος) meaning 'lizard' and ischion (ἴσχιον) meaning 'hip joint') is one of the two basic divisions of dinosaurs (the other being Ornithischia), classified by their hip structure. Saurischia and Ornithischia were originally called orders by Harry Seeley in 1888 though today most paleontologists classify Saurischia as an unranked clade rather than an order.

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