#NEXUS BEGIN DATA; DIMENSIONS NTAX=15 NCHAR=18; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Outgroup 000000000000000000 Cheirolepis 000000000000000001 Acipenserformes 000001111111111111 Australosomus 000110011111111111 Birgeria 000000111111111111 Boreosomus 011010001111111111 Howqualepis 000000000000001111 Kentuckia 000000000001111111 Mimia 000000000000010111 Moythomasia 000000000010111111 Neopterygian 111110001111111111 Perleidus 111110001111111111 Polypterus 000000000000000011 Pteronisculus 001010000111111111 Saurichthys 000001111111111111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;