#NEXUS BEGIN DATA; DIMENSIONS NTAX=18 NCHAR=16 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Plesiochelyidae 0000000000000000 Meiolania 1000000000000000 Chelydroidea 1110000000000000 Testudinoidea 1111000000000000 Trionychoidea 1111000000000000 Toxochelys 1010110000000000 Ctenochelys 1010111100000000 Osteopygis 1010110100000000 Allopleuron 1010111110000000 Puppigerus 1010111111000000 Chelonia_mydas 1010111111000000 Desmatochelys 1010010000110000 Protostega_gigas 1010010000110000 Corsochelys 1010010000011000 Mesodermochelys 1010010000011100 Eosphargis 1010010000011110 Psephophorus 1010010000011111 Dermochelys 1010010000011111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;