#NEXUS BEGIN DATA; DIMENSIONS NTAX=17 NCHAR=16 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Seymouria 0000000000000000 Limnoscelidae 1100000000000000 Diadectidae 1100000000000000 Synapsida 1010000000000000 Mesosauridae 1011000000000000 Acleistorhinus 1011111110000000 Millerettidae 1011111111000000 Pareiasauria 1011111111111000 Owenetta_kitchingorum 1011111111100000 Procolophon_trigoniceps 1011111111110000 Odontochelys 1011111111111110 Proganochelys 1011111111111101 Chelonii 1011111111111111 Captorhinidae 1011100000000000 Paleothyris 1011111000000000 Araeoscelidia 1011110000000000 Younginiformes 1011111100000000 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;