#NEXUS BEGIN DATA; DIMENSIONS NTAX=17 NCHAR=23 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Petrolacosaurus 00000000000000000000000 Araeoscelis 10000000000000000000000 Youngina 11000000000000000000000 Gephyrosaurus 11111000000000000000000 Squamata 11111000000000000000000 Champsosaurus 11001000000000010000000 Protorosaurus 11011111000000010001111 Megalancosaurus 11011111000000010000111 Tanystropheus 11011011100000011000011 Macrocnemus 11011011100000011000011 Trilophosaurus 11011001010000011100000 Rhynchosaurus 11011001011000011110001 Mesosuchus 11011001011100011110001 Pamelaria 11011001011110011001111 Prolacerta 11011001011111011001111 Proterosuchus 11011001011111111001111 Eupakeria 11011001011111111001111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;