EuparkeriaMarasuchusHerrerasaurusAbrictosaurusBMNH_A100EchinodonHeterodontosaurusLycorhinusPisanosaurusStormbergiaAgilisaurusHexinlusaurusAnabisetiaBugenasauraHypsilophodonJeholosaurusOrodromeusOthnieliaTalenkauenThescelosaurusYandusaurusZephyrosaurusRhabdodontidaeAnkylopollexiaDryosauridaeTenontosaurus_dossiTenontosaurus_tillettiChaoyangsaurusMicropachycephalosaurusPsittacosauridaeLiaoceratopsArchaeoceratopsCoronosauria_plus_LeptoceratopsidaeStenopelixWannanosaurusGoyocephaleHomalocephalePachycephalosauridaeGasparinisauraParksosaurusLesothosaurusScutellosaurusEmausaurusScelidosaurusAnkylosauriaStegosauriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Butler_etal_2008a