#NEXUS BEGIN DATA; DIMENSIONS NTAX=21 NCHAR=22; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Psittacosaurus_mongoliensis 0000000000000000000000 Stenopelix_valdensis 1000000000000000000000 Wannanosaurus_yanshiensis 1100000000000000100000 Goyocephale_lattimorei 1110000000000000110000 Homalocephale_calathocercos 1111000000000000110000 Tylocephale_gilmorei 1111111100000100110000 Prenocephale_prenes 1111111100000100110000 Yaverlandia_bitholus 1000000000000000110000 Pachycephalosauridae_indet_Ornatotholus_browni_holotype_AMNH_5450 1111000100000000110000 Pachycephalosauridae_indet_SMP_VP_1084 1111011100000111110101 Stegoceras_edmontonense_holotype_CMN_8830 1111011100000000111111 Stegoceras_breve_holotype_CMN_1423 1111001110000000110000 Stegoceras_sternbergi_holotype_CMN_8817 1111001111000000110000 Stegoceras_lambei_holotype_CMN_8818 1111001111000000110000 Stegoceras_validum_UA_2 1111001111000000110000 Stegoceras_sp_Gravitholus_albertae_holotype_TMP_72_dot_27_dot_1 1111001111000000110000 Stegoceras_sp_UCMP_130051 1111001111000000110000 Stygimoloch_spinifer 1111011100110010111100 Pachycephalosaurus_wyomingensis 1111011100110010111100 Sphaerotholus_goodwini_holotype_NMMNH_P_27403 1111011100011011111111 Sphaerotholus_buchholtzae_holotype_TMP_87_dot_113_dot_3 1111011100011011111111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;