Protoceratops_andrewsi
Leptoceratopsidae
Zuniceratops_christopheri
Turanoceratops_tardabilis
Avaceratops_lammersi
Centrosaurus_apertus
Einiosaurus_procurvicornis
Styracosaurus_albertensis
Pachyrhinosaurus_spp
Achelousaurus_horneri
Chasmosaurus_spp
Agujaceratops_mariscalensis
Mojoceratops_perifania
Pentaceratops_sternbergii
Anchiceratops_ornatus
Arrhinoceratops_brachyops
Eotriceratops_xerinsularis
Triceratops_spp
Torosaurus_spp