1. Instructions
Upon opening the file, if you see a RED X on the last slide, click the OPTIONS box on your security warning and select ENABLE THIS CONTENT. Then start the slide show to enable the 3D view.
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2. HO-PhotoRequest@si.edu or HumanOrigins@si.edu
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 ( houses many lemurs in its scientific collections.
This specimen, USNM ( is a male common brown lemur (Eulemur fulvus) from Madagascar. This individual was collected in 1895 by William Abbott near Mahanoro in Toamasina Province. This specimen weighed 2.5 kg, measured a total length of 997 mm, a tail length of 552 mm, and a head to body length of 445 mm.
This is a CT scan of the cranium of USNM 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 ( 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.
These slides can be used for educational purposes only. For all other uses, please contact the Human Origins Program at or