EusthenopteronAcanthostegaAdelogyrinusAnthracosaurusArcheriaAriekanerpetonBalanerpetonBaphetesBruktererpetonCaerorhachisCasineriaChroniosaurusCrassigyrinusDendrerpetonDiscosauriscusEoherpetonEucrittaGephyrostegusGreererpetonIchthyostegaLoxommaMegalocephalusMicrobrachisPaleothyrisPederpesPholiderpetonProterogyrinusPtyoniusSaxonerpetonSeymouriaSilvanerpetonUtegeniaWestlothianaWhatcheeriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Clack_et_Klembara_2009a