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Orangutan, Borneo (USNM 153824)
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 153824 (http://collections.mnh.si.edu/search/mammals/?irn=7255018), is a female orangutan from the island of Borneo, Indonesia (Pongo pygmaeus). It was collected by W.L. Abbott in 1908 near the Kendawangan River in Lanchut. The female weighed 84 lbs with a head to body length of 770 mm. The hind tarsus length measured at 280 mm.
This is a CT scan of the mandible of USNM 153824. 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.