Specimens: 32,000 (900 uncatalogued)
Frozen tissues: 4,200

Geographic representation: Emphasis in the Great Basin (especially Utah and Nevada test site) and Mexico.

Accredited by the American Society of Mammalogists (1991)

The collection includes skins, skulls, skeleton, tissue slides, paraffin tissue blocks, and trophies. It also houses the collection that was formerly at Utah State University as well as a portion of the University of Illinois Museum of Natural History collection (specimens from Colorado, Idaho, Montana, Oregon, Nevada, Utah, Washington, Wyoming and Mexico).