Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Callithricidae - marmosets and tamarins see Family Callitrichidae Gray, 1821 Genus Leontopithecus Lesson, 1840 - golden tamarins Leontopithecus chrysomelas (Kuhl, 1820) - golden-headed tamarin