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Western Assamese Macaque, India (USNM 259725)
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 259725 (http://collections.mnh.si.edu/search/mammals/?irn=7290193), is a female Western Assamese macaque (Macaca assamensis pelops) from India. This individual was collected by H. Stevens near Tarkhola in Sikkim Province. This individual weighed 15.5 lbs, had a total length of 820 mm, a tail length of 290 mm, a hind tarsus length of 148 mm, and an ear notch length of 35 mm.
This is a CT scan of the mandible of USNM 259725. 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.