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Macaque, Indonesia (USNM 121511)
Old World monkeys are primates and are more closely related to humans and apes than any other living nonhuman primate group. The Smithsonian Institution’s Division of Mammals (http://vertebrates.si.edu/mammals/) houses many Old World monkeys in its scientific collections.
This specimen, USNM 121511 (http://collections.mnh.si.edu/search/mammals/?irn=7245472), is a male crab-eating macaque (Macaca fascicularis fusca) from Indonesia. This individual was collected in 1902 by William Abbott near Pulo Simalur on the island of Sumatra. This specimen weighed 15.25 lbs and measured 940 mm in total length. The tail measured 460 mm long with a head to body length of 480 mm.
This is a CT scan of the cranium of USNM 121511. 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.