Siamang (USNM 519573)

USNM 519573

Siamangs are apes and one of our closest living relatives. The Smithsonian Institution’s Division of Mammals ( houses many siamangs in its scientific collections.

This specimen, USNM 519573 (, is a female siamang (Symphalangus syndactylus). This individual had a hind tarsus length of 160 mm, an ear notch length of 30 mm, and a head to body length of 720 mm. This female was born at the San Diego Zoo in 1965.

This is a CT scan of the cranium of USNM 519573. 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 relatives, the apes, available in 3D for education and research.