Golden-Headed Lion Tamarin, Brazil (USNM 518587)

USNM 518587

New World monkeys are primates and are more closely related to humans, apes and Old World monkeys than any other living nonhuman primate group. The Smithsonian Institution’s Division of Mammals ( houses many New World monkeys in its scientific collections. 

This specimen, USNM 518587 (, is a female golden-headed lion tamarin (Leontopithecus chrysomelas) from Brazil. This individual was collected in 1944 by H. W. Laemmert near Rio do Braco, Ilheus located in Brahia Province. This specimen weighed 700 g, had a total length of 645 mm, a tail length of 385 mm, a hind tarsus length of 82 mm, and an ear notch length of 22 mm.

This is a CT scan of the mandible of USNM 518587. These three-dimensional scans are made publicly available through the generous support of the Smithsonian 2.0 Fund, provided from the annual gifts of the Smithsonian National Board to the Secretary to use at his discretion (, and the Smithsonian Collections Care and Preservation Fund.

The main goal of this joint initiative between the Human Origins Program and the Division of Mammals is to make the NMNH's scientific collections of our closest living nonhuman primate relatives available in 3D for education and research.