Golden lion tamarin Primate DescriptionThe golden lion tamarin, also known as the golden marmoset, is a small New World monkey of the family Callitrichidae. Native to the Atlantic coastal forests of Brazil, the golden lion tamarin is an endangered species. Wikipedia Mass: 540 g (Estimated) Scientific name: Leontopithecus rosalia Conservation status: Endangered (Population stable) Encyclopedia of Life Trophic level: Omnivorous Encyclopedia of Life Length: Female: 25 cm, Male: 24 cm Encyclopedia of Life Height: Female: 26 cm (Male), Male: 26 cm (Female)