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Orangutan, Sumatra (USNM 267325)

Orangutans are great apes and one of our closest living relatives. The Smithsonian Institution’s Division of Mammals ( houses many orangutans in its scientific collections.

This specimen, USNM 267325 (, is an adult male orangutan from the island of Sumatra, Indonesia (Pongo abelii) that was collected at Adji in Kuala near the Simpang River in 1937.

This is a CT scan of the cranium of USNM 267325. 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 relatives, the apes, available in 3D for education and research.