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 Zalophus Gill, 1866 - California sea lion
         1 Zalophus californianus (Lesson, 1828) - California sealion