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 Delphinidae Gray, 1821 - oceanic dolphins
         Genus Steno Gray, 1846 - rough-toothed dolphin
           1 Steno bredanensis (Lesson, 1828) - rough-toothed dolphin