Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Colobinae Jerdon, 1867 Genus Nasalis Geoffroy Saint-Hilaire, 1812 - proboscis monkey Subgenus Nasalis Geoffroy Saint-Hilaire, 1812 see Genus Nasalis Geoffroy Saint-Hilaire, 1812