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 Phocoenidae Gray, 1825 - porpoises
         Genus Phocoena Cuvier, 1817 - common porpoises
           1 Phocoena phocoena (Linnaeus, 1758) - common porpoise
           2 Phocoena sinus Norris & McFarland, 1958 - vaquita
           3 Phocoena spinipinnis Burmeister, 1865 - Burmeister's porpoise