LeptoceratopsProtoceratopsZuniceratopsTuranoceratopsAgujaceratopsAlbertaceratopsAnchiceratopsArrhinoceratopsAvaceratopsBrachyceratopsCentrosaurus_apertusChasmosaurus_sp_UALVP_52613Chasmosaurus_belliChasmosaurus_russelliMojoceratopsCoahuilaceratopsEotriceratopsKosmoceratopsNedoceratopsOjoceratopsPachyrhinosaurus_lakustaiPentaceratopsTorosaurus_latusTorosaurus_utahensisTriceratops_sp_UCMP_154452Triceratops_horridusTriceratops_prorsusUtahceratopsVagaceratopsOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Currie_etal_2016ab