Protoceratops_andrewsi
Turanoceratops_tardabilis
Zuniceratops_christopheri
Diabloceratops_eatoni
Albertaceratops_nesmoi
Avaceratops_lammersi
Centrosaurus_apertus
Centrosaurus_brinkmani
Styracosaurus_albertensis
unnamed_centrosaurine
Sinoceratops_zhuchengensis
Rubeosaurus_ovatus
Einiosaurus_procurvicornis
Achelousaurus_horneri
Pachyrhinosaurus_canadensis
Pachyrhinosaurus_lakustai
Chasmosaurus_belli
Pentaceratops_sternbergii