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