#NEXUS BEGIN DATA; DIMENSIONS NTAX=20 NCHAR=20 ; FORMAT DATATYPE=STANDARD SYMBOLS=" 0 1" MISSING=? GAP=- ; MATRIX Qianichthyosaurus_zhoui 00000000000000000000 Callawayia_neoscapularis 10000000000000000000 Temnodontosaurus_platyodon 11111000000000000000 Temnodontosaurus_trigonodon 11111000000000000000 Suevoleviathan_integer 10111100000000001000 Suevoleviathan_disinteger 10111100000000001000 Leptonectes_tenuirostris 10011011110000001101 Leptonectes_moorei 10011001110000001100 Leptonectes_solei 10011000010000001110 Excalibosaurus_costini 10011000111000001100 Eurhinosaurus_longirostris 10011000111000001100 Hauffiopteryx_typicus 10011011110100001101 Stenopterygius_quadriscissus 10011011110111001100 Stenopterygius_triscissus 10011011110111001100 Stenopterygius_uniter 10011011110111001100 Stenopterygius_aaleniensis 10011011110101001100 Ichthyosaurus_communis 10001000000000001110 Ophthalmosaurus_icenicus 10011011110101111100 Aegirosaurus_leptopsondylus 10011011110101011100 Platypterygius_australis 10011011110101111100 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;