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Colobus Monkey, Tanzania (USNM 452646)
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 452646 (http://collections.mnh.si.edu/search/mammals/?irn=7340421), is a female Zanzibar red colobus monkey (Piliocolobus kirkii) from Tanzania. This individual was collected in 1967 by C. P. Booth in Zanzibar Province. This individual weighed 11.27 lbs, had a total length of 1106 mm, a tail length of 611 mm, an ear notch length of 28 mm, and a hind tarsus length of 156 mm.
This is a CT scan of the cranium of USNM 452646. 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.