Imperium naturae C. Linnaeus, 1758 - nature
   Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
     Class Mammalia Linnaeus, 1758 - mammals
       Mutica Linnaeus, 1766 see Superorder Mutica (C. Linnaeus, 1766)
         Order Cete Linnaeus, 1758 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
           37 Genus Monodon Linnaeus, 1758 - narwhal
           38 Genus Balaena Linnaeus, 1758 - bowhead whale, Greenland right whale
           39 Genus Physeter Linnaeus, 1758 - sperm whale
           40 Genus Delphinus Linnaeus, 1758 - common dolphin, saddleback dolphin