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Mandrill, Equatorial Guinea (USNM 598494)
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 598494 (http://collections.mnh.si.edu/search/mammals/?irn=10058436), is a male Mandrill (Mandrillus sphinx) from Equatorial Guinea. This individual was collected by Clyde Jones near Ayaminken in Rio Muni Province.
This is a CT scan of the mandible of USNM 598494 . 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.