Hypsilophodon_foxii
Stegoceras_validum
Yinlong_downsi
Liaoceratops_yanzigouensis
Aquilops_americanus
Auroraceratops_rugosus
Yamaceratops_dorngobiensis
Archaeoceratops_oshmai
Koreaceratops_hwaseongensis
Graciliceratops_mongoliensi
Ajkaceratops_kozmai
Zuniceratops_christopheri
Turanoceratops_tardabilis
Chasmosaurus_belli
Triceratops_horridus
Centrosaurus_apertus
Diabloceratops_eatoni
Bagaceratops_rozhdestvensky
Protoceratops_andrewsi
Asiaceratops_salsopaludalis
Cerasinops_hodgskissi
Prenoceratops_pieganensis
Ferrisaurus_sustutensis
Gryphoceratops_morrisoni
Leptoceratops_gracilis
Udanoceratops_tschizhovi
Unescoceratops_koppelhusae
Zhuchengceratops_inexpectus
Ischioceratops_zhuchengensi
Montanoceratops_cerorhyncho
Psittacosaurus_mongoliensis
Psittacosaurus_sinensis
Chaoyangsaurus_youngi
Xuanhuaceratops_niei