Brown Howler Monkey, Brazil (USNM 518256)

USNM 518256

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 518256 (, is a male brown howler monkey (Alouatta guariba) from Brazil. This individual was collected by De Souza in 1948 near Santa Catarina Province. This specimen weighed 6,800 g.

This is a CT scan of the cranium of USNM 518256. 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.