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Colobus Monkey, Liberia (USNM 481792)
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 481792 (http://collections.mnh.si.edu/search/mammals/?irn=7360738), is a female Western red colobus monkey (Piliocolobus badius badius) from Liberia. This individual was collected by D. A. Schlitter in 1971 near Zwedru in Grand Gedeh Province. This individual weighed 11 lbs, had a total length of 1260 mm, a tail length of 430 mm, a hind tarsus length of 169 mm, and an ear notch length of 29 mm.
This is a CT scan of the cranium of USNM 481792. 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.