The late paleobotanist Jack A. Wolfe (longtime member of the United States Geological Survey) collects fossil leaves at the Malakoff Diggins hydraulic gold mine, western foothills of California's Sierra Nevada. Photograph taken August 14, 2003.

Please Note: All fossil sites are off-limits without permission from the landowners. At Malakoff Diggnins, one must first secure a permit from the California State Park officials prior to a collecting expedition--a permit granted solely to individuals with a minimum B.S. degree from an accredited university who seek to undertake scientific research projects that can be fully authenticated by the petitioned authorities.