#NEXUS BEGIN DATA; DIMENSIONS NTAX=8 NCHAR=6; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Ancestor 000000 Embolomeri 000001 Gephyrostegidae 000011 Seymouriamorpha 000111 Solenodonsauridae 001111 Diadectomorpha 011111 Synapsida 111111 Sauropsida 111111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;