Protoceratops_andrewsi

Zuniceratops_christopheri

Turanoceratops_tardabilis

Pentaceratops_sternbergii

Chasmosaurus_belli

Xenoceratops_foremostensis

Sinoceratops_zhuchengensis

Einiosaurus_procurvicornis

Spinops_sternbergorum

Styracosaurus_albertensis

Rubeosaurus_ovatus

Coronosaurus_brinkmani

Centrosaurus_apertus

Avaceratops_lammersi

Albertaceratops_nesmoi

Diabloceratops_eatoni

Achelousaurus_horneri

Pachyrhinosaurus_lakustai

Pachyrhinosaurus_canadensis