Class Mammalia Linnaeus, 1758 - mammals
Status: extant
   Subclass Theria Parker & Haswell, 1897
  Status: extant
     Infraclass Eutheria Gill, 1872
    Status: extant
       Magnorder Boreoeutheria Springer & de Jong, 2001
      Status: extant
         Superorder Laurasiatheria Waddell, Okada & Hasegawa, 1999
        Status: extant
           Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
          Status: extant
             Suborder Whippomorpha
            Status: extant
               Infraorder Cetacea Brisson, 1762
              Status: extant
                 Parvorder Odontoceti Flower, 1867 - toothed whales
                Status: extant
                   Superfamily Delphinoidea Gray, 1821
                  Status: extant
                     1 Family Monodontidae Gray, 1821 - white whales
                    Status: extant
                     2 Family Delphinidae Gray, 1821 - oceanic dolphins
                    Status: extant
                     3 Family Phocoenidae Gray, 1825 - porpoises
                    Status: extant