(Ichthyostega,(Pederpes,(Crassigyrinus,(Greererpeton,(Eucritta,(Balanerpeton,Cochleosaurus),((Silvanerpeton,(Anthracosaurus,(Proterogyrinus,(Eoherpeton,(Palaeoherpeton,(Pholiderpeton,Archeria)))))),(Gephyrostegus,(Seymouria,(Limnoscelis,(Asaphestera,((Uralerpeton,(Suchonica,(Chroniosuchus,Jarilinus,(C_levis,(C_dongusensis,Madygenerpeton))))),((Bystrowiana,(Axitectum,Dromotectum)),(Synesuchus,Bystrowiella)))))))))))));