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Black Bearded Saki, Brazil (USNM 518225)
New World monkeys are primates and are more closely related to humans, apes and Old World monkeys than any other living nonhuman primate group. The Smithsonian Institution’s Division of Mammals (http://vertebrates.si.edu/mammals/) houses many New World monkeys in its scientific collections.
This specimen, USNM 518225 (http://collections.nmnh.si.edu/search/mammals/?irn=7389698), is a male black bearded saki (Chiropotes satanas satanas) from Brazil. This individual was collected in 1948 by A.P. de Souza. This specimen weighed 2.5 kg, measured a total length of 760 mm, a tail length of 380 mm, a hind tarsus length of 116 mm, and an ear notch length of 30 mm.
This is a CT scan of the cranium of USNM 518225 . 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.