Dinosaurs from late Early Cretaceous in the Mazongshan area, Gansu Province

Dinosaur fossils from Gongpoquan and Yujingzi basins in the Mazongshan area of Gansu Province were reviewed in this paper, and they can be assigned to the Mazongshan dinosaur assemblage (Aptian—Albian) based on the similarity of the output layers and members of dinosaur fossils. This assemblage has several characteristics by comparing with dinosaurs from the Jehol Biota. In general, Mazongshan dinosaur fossil assemblage is of great significance to further study of dinosaurs from Early Cretaceous strata of northern China.