#NEXUS BEGIN DATA; DIMENSIONS NTAX=6 NCHAR=6; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Ancestor 000000 Askeptosaurus 000011 Thalattosaurus 011101 Anshunsaurus 000111 Clarazia 101101 Hescheleria 111101 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;