Brown Woolly Monkey, Brazil (USNM 545880)

USNM 545880

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 545880 (, is a male brown woolly monkey (Lagothrix lagotricha) from Brazil. This individual was collected in 1974 in the Amazonas Province. This specimen weighed 5,800 g, measured a total length of 1,060 mm, with a tail length of 610 mm, a hind tarsus length of 150 mm, and an ear notch length of 25 mm.

This is a CT scan of the cranium of USNM 545880. 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.