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Orangutan, Borneo (USNM 142184)
Orangutans are great apes and one of our closest living relatives. The Smithsonian Institution’s Division of Mammals (http://vertebrates.si.edu/mammals/) houses many orangutans in its scientific collections.
This specimen, USNM 142184 (http://collections.mnh.si.edu/search/mammals/?irn=7251008), is a juvenile male orangutan (Pongo pygmaeus) from the island of Borneo, Indonesia. This individual was collected by W.L. Abbott in 1907 near the Sakaiam River.
This is a CT scan of the mandible of USNM 142184. 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 (http://smithsonian20.si.edu/fund.html), and the Smithsonian Collections Care and Preservation Fund.