#NEXUS BEGIN DATA; DIMENSIONS NTAX=18 NCHAR=21; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Paleomerus 000000000000000000000 Strabops 000000000000000000001 Aglaspidida 000000000000000011111 Neostrabops 000000000000000100111 Duslia 000000000000001100111 Triopus 000000000000011100111 Pseudarthron 000000000000111100111 Cheloniellon 000000000000111100111 Lemoneites 000000000011000000001 Weinbergina 000000011111000001011 Bunodes 000000011111000001011 Kasibelinurus 000000101111000001011 Xiphosurida 000000101111000001011 Diploaspis 001111000101000011111 Chasmataspis 001111000101000011111 Eurypterida 010011000101000011111 Scorpiones 110111000101000011111 Other_arachnids 100101000101000011111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;