(Panderichthys,(Elginerpeton,Obruchevichthys,Ichthyostega,Ventastega,Metaxygnathus,Acanthostega,(Whatcheeria,(Tulerpeton,Occidens,(Crassigyrinus,(Greerepeton,(Megalocephalus,Cochleosaurus,Phonerpeton,Eoherpeton,Gephyrpstegus,Balanerpeton,Platyrhinops,(Phopliderpeton,Proteogyrinus))))))));