#NEXUS BEGIN DATA; DIMENSIONS NTAX=6 NCHAR=3; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Osteolepiformes 000 Tetrapoda 001 Rhizodontida 001 Porolepiformes 111 Actinistia 011 Dipnoi 111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;