(Greererpeton,(Proterogyrinus,((Dendrerpeton,Balanerpeton,Capetus,(Chenoprosopus,Edops),(Iberospondylus,((Sclerocephalus,(Eryops,Parioxys)),(Zatrachys,(Ecolsonia,(Eoscopus,Tersomius)))))),(Dutuitosaurus,(Trimerorhachis,Saurerpeton)))));