(Ichthyostega,(Pederpes,(Crassigyrinus,(Greererpeton,(Eucritta,((Balanerpeton,Cochleosaurus),((Silvanerpeton,(Anthracosaurus,(Proterogyrinus,(Eoherpeton,(Palaeoherpeton,(Pholiderpeton,Archeria)))))),(Gephyrostegus,(Seymouria,(Limnoscelis,(Asaphestera,(Laosuchus,(Bystrowiana,(Chroniosuchus,Jarilinus,(Chroniosaurus,Madygenerpeton)))))))))))))));