Leptoceratops_gracilis

Protoceratops_andrewsi

Bagaceratops_rozhdestvenskyi

Magnirostris_dodsoni

Zuniceratops_christopheri

Turanoceratops_tardabilis

Pentaceratops_sternbergii

Chasmosaurus_belli

Diabloceratops_eatoni

Nasutoceratops_titusi

Avaceratops_lammersi

Albertaceratops_nesmoi

Styracosaurus_albertensis

Rubeosaurus_ovatus

Spinops_sternbergorum

Coronosaurus_brinkmani

Centrosaurus_apertus

Sinoceratops_zhuchengensis

Xenoceratops_foremostensis

Einiosaurus_procurvicornis

Achelousaurus_horneri

Pachyrhinosaurus_canadensis

Pachyrhinosaurus_perotorum

Pachyrhinosaurus_lakustai