Class Mammalia Linnaeus, 1758 - mammals
   Order Primates Linnaeus, 1758 - primates
     Family Cercopithecidae Gray, 1821 - Old World monkeys
       Subfamily Cercopithecinae Gray, 1821
         Genus Cercopithecus Linnaeus, 1758 - guenons
           01 Cercopithecus ascanius (Audebert, 1799) - Schmidt's guenon
           02 Cercopithecus campbelli Waterhouse, 1838 - Campbell's monkey
           03 Cercopithecus cephus (C. Linnaeus, 1758) - moustached monkey
           04 Cercopithecus diana (C. Linnaeus, 1758) - Diana monkey
           05 Cercopithecus dryas Schwartz, 1932 - dryas monkey
           06 Cercopithecus erythrogaster Gray, 1866 - red-bellied monkey
           07 Cercopithecus erythrotis Waterhouse, 1838 - red-eared monkey
           08 Cercopithecus hamlyni Pocock, 1907 - owl-faced monkey
           09 Cercopithecus lhoesti P. Sclater, 1898[1899] - L'Hoest's monkey
           10 Cercopithecus mitis Wolf, 1822 - diademed monkey
           11 Cercopithecus mona (Schreber, 1774) - mona monkey
           12 Cercopithecus neglectus Schlegel, 1876 - De Brazza's monkey
           13 Cercopithecus nictitans (C. Linnaeus, 1766) - greater white-nosed monkey
           14 Cercopithecus petaurista (Schreber, 1774) - lesser white-nosed monkey
           15 Cercopithecus pogonias Bennett, 1833 - crowned guenon
           16 Cercopithecus preussi Matschie, 1898 - Preuss's monkey
           17 Cercopithecus sclateri Pocock, 1904
           18 Cercopithecus solatus M.J.S. Harrison, 1988 - sun-tailed monkey
           19 Cercopithecus wolfi A. Meyer, 1891 - Wolf's monkey