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Nilgiri Langur, India (USNM 520675)
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 520675 (http://collections.nmnh.si.edu/search/mammals/?irn=7392148), is a female Nilgiri langur (Semnopithecus johnii) from India. This individual was collected in1976 near Nilgiri Hills. This specimen measured 765 mm in tail length and the hind tarsus measured 185 mm long.
This is a CT scan of the mandible of USNM 520675. 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.