SF mammoth tooth fossil on display at Cal Academy

The recently-discovered fossilized tooth of a wooly mammoth is on display at the California Academy of Sciences. (Photo courtesy California Academy of Sciences.)

November 8, 2012 6:22:01 PM PST
A recently-discovered slice of ancient history is now on display at a San Francisco museum. You can see the fossilized tooth of a Columbian mammoth at the California Academy of Sciences.

The fossil was found in September by a crane operator working at the Transbay Transit Center construction site in Downtown San Francisco.

He made the discovery about 100-feet below street level.

It's a big chunk of an upper tooth belonging to a 12-to-14 foot-tall mammoth that lived more than 8,000 years ago.