Lesothosaurus
Heterodontosaurus
Orodromeus
Agilisaurus
Jeholosaurus
Haya
Stegoceras
Homalocephale
Goyocephale
Wannanosaurus
Psittacosaurus_sinensis
Psittacosaurus_lujiatunensis
Psittacosaurus_mongoliensis
Xuanhuaceratops
Chaoyangsaurus
Yinlong_downsi
Hualianceratops
Liaoceratops
Aquilops
Auroraceratops
Archaeoceratops
Yamaceratops
Graciliceratops
Asiaceratops
Protoceratops
Bagaceratops
Zuniceratops
Triceratops
Centrosaurus
Cerasinops
Prenoceratops
Koreaceratops
Montanoceratops
Unescoceratops
Zhuchengceratops
Udanoceratops
Leptoceratops