Camptosaurus

Camptosaurus Temporal range: Late Jurassic PreЄ Є O S D C P T J K Pg N
Reconstructed skeleton in Japan
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Order:	†Ornithischia
Suborder:	†Ornithopoda
Clade:	†Ankylopollexia
Superfamily:	†Camptosauroidea Marsh, 1885
Family:	†Camptosauridae Marsh, 1885
Genus:	†Camptosaurus Marsh, 1885
Species:	†C. dispar
Binomial name
Camptosaurus dispar (Marsh, 1879 [originally Camptonotus])
Synonyms
Brachyrophus altarkansanus Cope, 1878 Symphyrophus musculosus Cope, 1878 Camptonotus dispar Marsh, 1879 (preoccupied) Camptosaurus medius Marsh, 1894 Camptosaurus nanus Marsh, 1894 Camptosaurus browni Gilmore, 1909

Camptosaurus (/ˌkæmptoʊˈsɔːrəs/ KAMP-to-SAWR-əs) is a genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic period of western North America and possibly Europe. The name means 'flexible lizard', (Greek καμπτος/kamptos meaning 'bent' and σαυρος/sauros meaning 'lizard').

Camptosaurus is a relatively heavily built form, with robust hindlimbs and broad feet, still having four toes. Due to the separate status of Uteodon it has become problematic which material from the Morrison belongs to Camptosaurus. The specimens with certainty belonging to Camptosaurus dispar, from Quarry 13, have been recovered from very deep layers, probably dating to the Callovian-Oxfordian. The largest fragments from later strata indicate adult individuals more than 7.9 metres (26 ft) long, and 2 metres (6.6 ft) at the hips. The Quarry 13 individuals are smaller though. They have been described as reaching 6 meters (19.7 feet) in length and 785 – 874 kg in weight. In 2010 Gregory S. Paul gave an even lower estimate: a length of five metres and a weight of half a tonne.