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Milne-Edwards' Sifaka, Madagascar (USNM 63351)
Lemurs are primates and are more closely related to humans, apes and monkeys than any other living nonhuman primate group. The Smithsonian Institution’s Division of Mammals (http://vertebrates.si.edu/mammals/) houses many lemurs in its scientific collections.
This specimen, USNM 63351 (http://collections.nmnh.si.edu/search/mammals/?irn=7232016), is a female Milne-Edwards’ sifaka (Propithecus edwardsi) from Madagascar. This individual was collected in 1895 by William Abbott near Ambodiasy in the Faraony River Valley, Fianarantsoa Province. This specimen weighed 3.3 kg, measured a total length of 876 mm, a tail length of 419 mm, and a head to body length of 457 mm.
This is a CT scan of the cranium of USNM 63351. 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.
The main goal of this joint initiative between the Human Origins Program and the Division of Mammals is to make the NMNH's scientific collections of our closest living nonhuman primate relatives available in 3D for education and research.