OsteolepiformesPanderichthyidaeAcanthostegaIchthyostegaTulerpetonCrassigyrinusLoxommatidaeColosteidaeDendrerpetonEryopsEcolsoniaTersomiusAmphibamusApateonDoleserpetonProterogyrinusArcheriaGephyrostegidaeSolenodonsaurusKotlassiaSeymouriaAriekanerpetonWestlothianaAistopodaAdelogyrinidaeNectrideaPantylusRhynchonkosBrachystelechidaeLysorophiaTriadobatrachusDiscoglossidaePipidaeKaraurusHynobiidaeSirenidaeProteidaeEocaeciliaRhinatrematidaeIchthyophiidaeLimnoscelisDiadectesSynapsidaCaptorhinidaeProcolophonidaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Laurin_et_Reisz_1999a