Euparkeria_capensisMarasuchus_liloensisHerrerasaurus_ischigualastensisPisanosaurus_mertiiAbrictosaurus_consorsEchinodon_becklessiFruitadens_haagarorumHeterodontosaurus_tuckiLycorhinus_angustidensNHM_RU_A100_formerly_BMNH_RU_A100Tianyulong_confuciusiEocursor_parvusLesothosaurus_diagnosticusStormbergia_dangershoekiAgilisaurus_louderbackiHexinlusaurus_multidensAnabisetia_saldiviaiBugenasaura_infernalisHypsilophodon_foxiiJeholosaurus_shangyuanensisOrodromeus_makelaiOthnieliosaurus_consorsTalenkauen_santacrucensisThescelosaurus_neglectusYandusaurus_hongheensisZephyrosaurus_schaffiRhabdodontidaeAnkylopollexiaDryosauridaeTenontosaurus_dossiTenontosaurus_tilletiYinlong_downsiPsittacosauridaeLiaoceratops_yanzigouensisArchaeoceratops_oshimaiUnnamed_taxon_Coronosauria_plus_LeptoceratopsidaeChaoyangosaurus_youngiMicropachycephalosaurus_hongtuyanensisStenopelix_valdensisWannanosaurus_yansiensisGoyocephale_lattimoreiHomalocephale_calathocercosPachycephalosauridaeGasparinisaura_cincosaltensisParksosaurus_warreniScutellosaurus_lawleriEmausaurus_ernstiiScelidosaurus_harrisoniiAnkylosauriaStegosauriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Butler_etal_2010a