(Panderichthys,(Elginerpeton,Obruchevichthys,Ichthyostega,Ventastega,Metaxygnathus,Acanthostega,Whatcheeria,Tulerpeton,(Crassigyrinus,Greerepeton,(Megalocephalus,(Cochleosaurus,Phonerpeton,Balanerpeton,Platyrhinops,Microbrachis,Discosauriscus,(Eoherpeton,Gephyrpstegus,(Phopliderpeton,Proteogyrinus)),(Eocaptorhinus,Diploceraspis,Sauropleura,Ophiacodon))))));