Type species: Jinzhousaurus yangi

Location: Yixian Formation, Liaoning Province, China

Age: Early Cretaceous; Barrenian to Aptian, 126-120 million years ago

Jinzhousaurus was the first large dinosaur discovered in the Yixian Formation and among the largest complete dinosaur in the Jehol biota. It is known for a complete skeleton that belonged to a seven-meter individual. Its skull is preserved well enough to identify the bones that compose it. Jinzhousaurus belongs to a group of ornithischian ornithopod dinosaurs called iguanodontids, most famous for the genus Iguanodon. According to its skull and teeth, it is indeed a relative of Iguanodon and Ouranosaurus and one of the few known iguanodontids in Asia. However its skull also betrays features not seen in iguanodonts, but distinct in hadrosaurs. This mosaic of features suggests that Jinzhousaurus belong to a group of iguanodontids close to the ancestry of the famous Late Cretaceous duck-billed dinosaurs.


Wang Xiaolin and Xu Xing "A new iguanodontid (Jinzhousaurus yangi gen. et sp. nov.) from the Yixian Formation of western Liaoning, China" Chinese Science Bulletin Vol 46, No 19 October 2001 pgs 1669-1672