Top and bottom: Paleobotanist Howard Schorn completes the transfer of boxes of middle Eocene leaves to the archival paleobotanical collections at the University California Museum of Paleontology in Berkeley. Howard Schorn, paleobotanist Jack A. Wolfe, and geologist/geophysicist Clement G. Chase collected the fossils from many abandoned hydraulic gold mines, northern Sierra Nevada, California, during a paleobotanical expedition in the summer of 2003. Photograph taken on August 18, 2003.

Please Note: All fossil sites are off-limits without permission from the landowners.