Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Hylobatidae Gray, 1871 - gibbons Genus Hylobates Illiger, 1811 - gibbons Hylobates agilis F. Cuvier, in É. Geoffroy Saint-Hilaire & F. Cuvier, 1821 - agile gibbon