Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Class Mammalia Linnaeus, 1758 - mammals
       Subclass Theria Parker & Haswell, 1897
         Infraclass Placentalia Owen, 1837 see Cohort Placentalia Owen, 1837
           Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises see Infraorder Cetacea Brisson, 1762
             Suborder Odontoceti Flower, 1867 - toothed whales see Parvorder Odontoceti Flower, 1867
               01 Family Delphinidae Gray, 1821 - oceanic dolphins
               02 Family Monodontidae Gray, 1821 - white whales
               03 Family Phocoenidae Gray, 1825 - porpoises
               04 Family Physeteridae Gray, 1821 - sperm whales
               05 Family Kogiidae Gill, 1871
               06 Family Platanistidae Gray, 1846 - river dolphins
               07 Family Iniidae Gray, 1846 - boutos
               08 Family Lipotidae Zhou, Quian & Li, 1978 - baiji
               09 Family Pontoporiidae Gray, 1870 - Franciscana, La Plata dolphin
               10 Family Ziphiidae Gray, 1850 - beaked whales