Class [Mammalia] Linnaeus, 1758 - mammals
   Order Pinnipedia Illiger, 1811 - seals, sea lions, and walrus see Parvorder Pinnipedia Illiger, 1811
     Family Otariidae Gray, 1825 - eared seals, fur seals, and sea lions
       Genus Callorhinus Gray, 1859 - northern fur seal
         1 Callorhinus ursinus (Linnaeus, 1758) - northern fur seal