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Orangutan, Sumatra (USNM 143602)
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 143602 (http://collections.mnh.si.edu/search/mammals/?irn=7251587), is an adult female orangutan from the island of Sumatra, Indonesia (Pongo abelii) that was collected by W.L. Abbott at Aru Bay on January 16th, 1906. This young adult weighed 74 lbs with a head to body length of 810 mm. While standing, the female measured 1180 mm tall.
This is a CT scan of the mandible of USNM 143602. 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.