#NEXUS BEGIN DATA; DIMENSIONS NTAX=18 NCHAR=17; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Pachycephalosauria 00000000000000000 Psittacosauridae 11000000000000000 Chaoyangsaurus 01000000000000000 Archaeoceratops 11110000000000000 Graciliceratops 11111111000000010 Bagaceratops 11110111100000011 Protoceratops 11110111100000000 Udanoceratops 11110011011100000 Leptoceratops 11110011011100000 Montanoceratops 11110011001110000 Prenoceratops 11110011001110000 Centrosaurus 11111111000001111 Triceratops 11111111000001111 Zuniceratops 11111111000000111 Cerasinops 11110011000100000 Liaoceratops 11010000000000000 IGM_100_slash_1315 11110001000000000 Zhuchengceratops_inexpectus 11110011011100000 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;