Class Mammalia Linnaeus, 1758 - mammals
   Order Carnivora Bowdich, 1821 - carnivores
     Family Phocidae Gray, 1821 - true seals
       Genus Phoca Linnaeus, 1758 - harbor, ringed, harp, and ribbon seals
         Phoca sibirica Gmelin, in Linnaeus, 1788 - Baikal seal see Pusa sibirica (Gmelin, 1788)