#NEXUS BEGIN DATA; DIMENSIONS NTAX=20 NCHAR=19; FORMAT SYMBOLS= " 0 1" MISSING=? GAP=- ; MATRIX Ancestor 0000000000000000000 Branchiosaurus 0000000000001111111 Apateon 0000000000011111111 Schoenfelderpeton 0000000000011111111 Albanerpetontidae 0000000001100111111 Tuditanidae 0000011110100111111 Pantylidae 0111111110100111111 Gymnarthridae 0001111110100111111 Hapsidopareiontidae 0000000110100111111 Microbrachidae 0000101110100111111 Brachystelechidae 0000000010100111111 Rhynchonkos 0011111110100111111 Gymnophiona 0111111110100111111 Caudata 1000000001100111111 Salientia 1000000001100111111 Platyrhinops 0000000000000000001 Amphibamus 0000000000000000011 Tersomius 0000000000000000111 Doleserpeton 0000000000000001111 Micromelerpeton 0000000000000011111 ; END; BEGIN ASSUMPTIONS; OPTIONS DEFTYPE=unord PolyTcount=MINSTEPS ; END;