#NEXUS BEGIN DATA; DIMENSIONS NTAX=21 NCHAR=19 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Proganochelys 0000000000000000000 Australochelyidae 1000000000000000000 Proterochersis 1110000000000000000 Pleurodira 1110000000000000000 Kayentachelys 1011000000000000000 Meiolaniidae 1011111000000000000 Sinochelyidae 1011011100000000000 Mongolochelys 1011111000000000000 Otwayemys 1011011100000000000 Kallokibotion 1011001011000000000 Tretosternon 1011001011000000000 Paracryptodira 1011001001100000000 Plesiochelyidae 1011001001111000000 Hylaeochelys 1011001001111000000 Xinjiangchelyidae 1011001001101110000 Brodiechelys 1011001001101110000 Sinemydidae 1011001001101011000 Chelydroidea 1011001001101011100 Chelonioidea 1011001001101011110 Trionychoidea 1011001001101011111 Testudinoidea 1011001001101011111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;