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 chrysopygus (Mikan, 1823) - golden-rumped tamarin