OUTGROUP

Acanthostega_gunnari

Ichthyostega_stensioei

Greererpeton_burkemorani

Megalocephalus_pachycephalus

Baphetes_kirkbyi

Saxonerpeton_geinitzi

Microbrachis_pelikani

Sauropleura_pectinata_slash_scalaris

Lethiscus_stocki

Dendrerpeton_acadianum

Balanerpeton_woodi

Eryops_megacephalus

Ecolsonia_cutlerensis

Crassigyrinus_scoticus

Whatcheeria_deltae

Eoherpeton_watsoni

Proterogyrinus_scheelei

Pholiderpeton_scutigerum

Archeria_crassidisca

Gephyrostegus_bohemicus

Diadectes_absitus

Tseajaia_campi

Limnoscelis_paludis

Petrolacosaurus_kansensis

Eocaptorhinus_laticeps

S_sanjuanensis

Seymouria_baylorensis

Utegenia_shpinari

Ariekanerpeton_sigalovi

D_pulcherrimus

Discosauriscus_austriacus