EusthenopteronAcanthostegaIchthyostegaCrassigyrinusGephyrostegusProterogyrinusPholiderpetonGreererpetonBalanerpetonDendrerpetonEucrittaMegalocephalusLoxommaBaphetesWhatcheeriaPederpesSeymouriaEoherpetonCaerorhachisWestlotianaSilvanerpetonAdelogyrinusMicrobrachisSaxonerpetonPtyoniusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Clack_2002a