Hypsilophodon_foxi

Stegoceras_validus

Xuanhuaceratops_niei

Chaoyangsaurus_youngi

Psittacosaurus_sinensis

Psittacosaurus_mongoliensis

Liaoceratops_yanzhiguouensis

Yamaceratops_gobiensis

Archaeoceratops_oshimai

Koreaceratops_hwaseongensis

Cerasinops_hodgskissi

Prenoceratops_peiganensis

Udanoceratops_tahizhovi

Montanoceratops_cerorhynchus

Leptoceratops_gracilis

Graciliceratops_mongoliensis

Protoceratops_andrewsi

Bagaceratops_rozhdestvenskyi

Zuniceratops_christopheri

Triceratops_horridus

Centrosaurus_apertus