Leptoceratops_gracilis

Protoceratops_andrewsi

Bagaceratops_rozhdestvenskyi

Magnirostris_dodsoni

Zuniceratops_christopheri

Turanoceratops_tardabilis

Pentaceratops_sternbergii

Chasmosaurus_belli

Diabloceratops_eatoni

Nasutoceratops_titusi

Avaceratops_lammersi

Xenoceratops_foremostensis

Albertaceratops_nesmoi

Wendiceratops_pinhornensis

Sinoceratops_zhuchengensis

Einiosaurus_procurvicornis

Achelousaurus_horneri

Pachyrhinosaurus_perotorum

Pachyrhinosaurus_lakustai

Pachyrhinosaurus_canadensis

Styracosaurus_albertensis

Rubeosaurus_ovatus

Coronosaurus_brinkmani

Centrosaurus_apertus

Spinops_sternbergorum