Yandusaurus (yan·du·saur·us) (pronounced: YEN-doo-SAWR-us, meaning: »Yandu lizard«) is a genus of hypsilophodontid dinosaur from the Bathonian age (Middle Jurassic, approximately 169 to 163 Mya) of China.
A fast-moving biped, Yandusaurus had four toes on each foot and five fingers on each hand. It was 1 meters (3 feet) to 1.6 meters (5 feet) in length, and around 0.3 meters (1 feet) in height, weighing around 7 kilograms (15 lbs). One species (Y. hongheensis) is known from two nearly complete skeletons. He and Cai (1983) and Paul (1992) identified a second species, Y. multidens, which was later re-assigned to the genus Agilisaurus as A. multidens, and subsequently placed in its own genus, Hexinlusaurus.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Ornithischia
Suborder: Cerapoda
Infraorder: ?Ornithopoda
Family: Hypsilophodontidae
Genus: Yandusaurus He, 1979
Species: Y. hongheensis He, 1979
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