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