#NEXUS BEGIN DATA; DIMENSIONS NTAX=21 NCHAR=18; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Apsaravis 000000000000000000 Hesperornis 110000000000000000 Ichthyornis 110000000000000000 Rheidae 011110000000000000 Tinamidae 011110000000000000 Galliformes 010110000000000000 Anseriformes 010011100000000000 Pelagornis_slash_Osteodon 010011110000000000 Dasornis 010011110000000000 Phaethontidae 010010101110000000 Procellariiformes 010010101110000000 Spheniscidae 010010100111000000 Gaviidae 010010100111100000 Podicipedidae 010010100111100000 Phoenicopteridae 010010100010010000 Ciconiidae 010010100010011000 Scopidae 010010100010011000 Ardeidae 010010100010000100 Fregatidae 010010100010000110 Pelecanidae 010010100010000111 Suloidea 010010100010000111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;