Peishansaurus philemys

Peishansaurus () was a genus of ornithischian dinosaur that lived during the Late Cretaceous period (late Santonian-Campanian stages), roughly 85-72 million years ago.

Peishansaurus was named and described by the Swedish paleontologist Anders Birger Bohlin in 1953. The type species is Peishansaurus philemys. Peishansaurus is named after Beishan, the "Northern Mountains" in Gansu. The specific name philemys means "lover of turtles" from the Greek φιλέω, phileo, "to love", and ἐμύς, emys, "water turtle" in reference to the fact that at the site also the turtle Peishanemys latipons was found, a member of the Dermatemydidae.