#NEXUS BEGIN DATA; DIMENSIONS NTAX=21 NCHAR=20 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Ancestor 00000000000000000000 Pachyophiidae 10000000000000000000 Madtsoiidae 11000000000000000001 Dinilysia 11100000000000000001 Leptotyphlopidae 11111000000000000000 Typhlopidae 11111100000000000000 Anomalepididae 11111100000000000000 Anomochilus 11101011100000000000 Uropeltidae 11101011100000000000 Cylindrophis 11101001110000000000 Anilius 11101001110000000000 Xenopeltis 11101000101100000000 Loxocemus 11101000101100000000 Pythoninae 11101000100111100000 Boinae 11101000100111100000 Erycinae 11101000100101100000 Ungaliophiinae 11101000100100110000 Tropidophiinae 11101000100100111000 Bolyeriidae 11101000100100111100 Acrochordidae 11101000100100111110 Colubroidea 11101000100100111110 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;