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Orangutan, Borneo (USNM 153823)
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 153823 (http://collections.mnh.si.edu/search/mammals/?irn=7255017), is an older adult male 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 male weighed 200 lbs with a head to body length of 970 mm. The hind tarsus length measured at 335 mm.
This is a CT scan of the mandible of USNM 153823. 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.