Class Mammalia Linnaeus, 1758 - mammals
   Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises see Infraorder Cetacea Brisson, 1762
     Suborder Odontoceti Flower, 1867 - toothed whales see Parvorder Odontoceti Flower, 1867
       Family Platanistidae Gray, 1846 - river dolphins
         Genus Inia d'Orbigny, 1834 - Amazon River dolphin
           1 Inia geoffrensis (Blainville, 1817) - boutu