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Orangutan, Sumatra (USNM 143593)
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 143593 (http://collections.nmnh.si.edu/search/mammals/?irn=7251578), is a male orangutan (Pongo abelii) from the island of Sumatra, Indonesia. It was collected by W.L. Abbott in 1906. This specimen weighed 160 lbs and measured a head to body length of 965 mm.
This is a CT scan of the right fifth metacarpal of USNM 143593. 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.