Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Callitrichidae Gray, 1821 - marmosets, tamarins Genus Callithrix Erxleben, 1777 - marmosets Callithrix penicillata (É. Geoffroy Saint-Hilaire, 1812) - black ear-tufted marmoset