Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Cercopithecinae Gray, 1821 Genus Theropithecus Geoffroy Saint-Hilaire, 1843 - gelada Theropithecus gelada (Rüppell, 1835) - gelada