Class [Mammalia] Linnaeus, 1758 - mammals
   Order Pinnipedia Illiger, 1811 - seals, sea lions, and walrus see Parvorder Pinnipedia Illiger, 1811
     Family Phocidae Gray, 1821 - true seals
       Genus Monachus Fleming, 1822 - monk seals
         1 Monachus monachus (Hermann, 1779) - Mediterranean monk seal
         2 Monachus schauinslandi Matschie, 1905 - Hawaiian monk seal
         3 ‡Monachus tropicalis (Gray, 1850) - Caribbean monk seal