(Eusthenopteron,(Panderichthys,(Elginerpeton,((Ventastega,Metaxygnathus),(Acanthostega,(Ichthyostega,(Hynerpeton,((Greerepeton,(Balanerpeton,(Eryops,Saxonerpeton))),(Tulerpeton,(Caerorhachis,(Whatcheeria,(Crassigyrinus,(Westlothiana,(Proterogyrinus,Archeria))))))))))))));