The Free Press, Mankato, MN


LA Tar Pits-3

Laura Tewksbury, top, and Karrie Howard excavate more than 42,000-year-old bison fossils with dental picks at the La Brea Tar Pits on Wednesday, Oct. 23, 2013, in Los Angeles. On Monday, Oct. 28, 2013 the George C. Page Museum celebrates a century of excavation at the La Brea Tar Pits, considered the richest and most diverse collection of Ice Age fossils. (AP Photo/Jae C. Hong)