EuparkeriaMarasuchusHerrerasaurusAbrictosaurusBMNH_A100EchinodonHeterodontosaurusLycorhinusPisanosaurusStormbergiaAgilisaurusHexinlusaurusAnabisetiaBugenasauraHypsilophodonJeholosaurusOrodromeusOthnieliaTalenkauenThescelosaurusYandusaurusZephyrosaurusRhabdodontidaeAnkylopollexiaDryosauridaeTenontosaurus_dossiTenontosaurus_tillettiChaoyangsaurusMicropachycephalosaurusAlbalophosaurus_yamaguchiorumPsittacosauridaeLiaoceratopsArchaeoceratopsCoronosauria_plus_LeptoceratopsidaeStenopelixWannanosaurusGoyocephaleHomalocephalePachycephalosauridaeGasparinisauraParksosaurusLesothosaurusScutellosaurusEmausaurusScelidosaurusAnkylosauriaStegosauriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Ohashi_et_Barrett_2009a