#NEXUS BEGIN DATA; DIMENSIONS NTAX=9 NCHAR=8; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Paleothyris 00000000 Araeoscelis 00000011 Petrolacosaurus 00000101 Coelurosauravus 00001111 Claudiosaurus 00011111 Youngina 01111111 Gephyrosaurus 01111111 Pachypleurosauridae 10111111 non_pachypleurosaur_Sauropterygia 10111111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;