Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Cercopithecinae Gray, 1821 Genus Cercocebus Geoffroy Saint-Hilaire, 1812 - mangabeys Cercocebus albigena (Gray, 1850) - white-cheeked mangabey see Lophocebus albigena (Gray, 1850)