Silvery Lutung, Indonesia (USNM 104840)

USNM 104840

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 ( houses many Old World monkeys in its scientific collections. 

This type specimen, USNM 104840 (, is a female silvery lutung (Trachypithecus obscurus vigilans) from Indonesia. This individual was collected in 1900 by William Abbott near Kepulauan Riau Province located on Sirhassen Island of the Natuna Islands. In 1913, G. S. Miller designated this individual the type specimen Presbytis vigilans.

This is a CT scan of the cranium of USNM 104840. 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.