(Leptoceratops_gracilis,((Protoceratops_andrewsi,(Magnirostris_dodsoni,Bagaceratops_rozhdestvenskyi)),(Turanoceratops_tardabilis,Zuniceratops_christopheri,((Chasmosaurus_belli,Pentaceratops_sternbergii),(Diabloceratops_eatoni,((Xenoceratops_foremostensis,(Albertaceratops_nesmoi,(((Rubeosaurus_ovatus,Styracosaurus_albertensis),(Coronosaurus_brinkmani,(Spinops_sternbergorum,Centrosaurus_apertus))),(Einiosaurus_procurvicornis,(Achelousaurus_horneri,(Pachyrhinosaurus_canadensis,Pachyrhinosaurus_lakustai,Pachyrhinosaurus_perotorum)))),(Sinoceratops_zhuchengensis,Wendiceratops_pinhornensis))),(Avaceratops_lammersi,Nasutoceratops_titusi)))))));