内蒙古鄂尔多斯地区早白垩世原角龙类化石的发现及其意义

根据采自内蒙古自治区鄂尔多斯杭锦旗一件恐龙不完整头骨新材料的形态学特征,鉴定其为原角龙未定种(Protoceratops sp.),产出地层为下白垩统.这是原角龙属化石在早白垩世地层中的首次报道,也是该类恐龙在鄂尔多斯地区的首次记录.该化石的发现,扩大了原角龙化石在我国的地理分布范围,也丰富了鄂尔多斯地区恐龙动物群的内容.

The Discovery and Significance of the Protoceratopsid Dinosaur from the Lower Cretaceous of Ordos Region, Inner Mongolia

A partial skull of protoceratopsid dinosaur from the Lower Cretaceous strata of Hanggin Banner, Ordos City, Inner Mongolia, is described and assigned to Protoceratops sp. This is the first report of protoceratopsid dinosaur from the Lower Cretaceous of China, and also the first record of protoceratopsid dinosaur from Ordos region. This discovery not only expands the distribution of protoceratopsid dinosaur in China but also enriches the Ordos dinosaur fauna.