OUTGROUPAcanthostega_gunnariArcheria_crassidiscaAriekanerpeton_sigaloviBalanerpeton_woodiBaphetes_kirkbyiBruktererpeton_fiebigiChroniosaurus_dongusensisCrassigyrinus_scoticusDendrerpeton_acadianumDiadectes_absitusDiscosauriscus_austriacusDiscosauriscus_pulcherrimusEcolsonia_cutlerensisEocaptorhinus_laticepsEoherpeton_watsoniEryops_megacephalusGephyrostegus_bohemicusGreererpeton_burkemoraniIchthyostega_stensioeiKarpinskiosaurus_secundusLethiscus_stockiLimnoscelis_paludisMakowskia_laticephalaMegalocephalus_pachycephalusMicrobrachis_pelikaniPetrolacosaurus_kansensisPholiderpeton_scutigerumProterogyrinus_scheeleiSauropleura_pectinatascalarisSaxonerpeton_geinitziSeymouria_baylorensisSeymouria_sanjuanensisSpinarerpeton_brevicephalumTseajaia_campiUtegenia_shpinariWhatcheeria_deltaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Klembara_etal_2014a