Mentawai Langur, Indonesia (USNM 544968)

USNM 544968

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

This specimen, USNM 544968 (, is a male Mentawai langur (Presbytis potenziani siberu) from Indonesia. This individual was collected by R. L. Tilson near the Simuri River Basin located in the Sumatera Barat Province on the Central Siberut Island of the Mentawai Islands.

This is a CT scan of the cranium of USNM 544968. 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.