Wooly Mammoth Tooth Unearthed in California

Construction crew in San Francisco dug up a well-preserved part of prehistoric mammal?s jaw.
3:00 | 09/13/12

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Transcript for Wooly Mammoth Tooth Unearthed in California
It started as just another day for crane operator Brandon balance and I was excavating using a -- bad bad. Going through layer of sand and suddenly I noticed sons' -- object that came. This is what he had pulled up from 110 feet below the surface. The -- and part of -- job although woolly mammoth considered the most famous of the prehistoric mammals. Cousin of the modern day elephant this -- base stuff is. Is is the original email mall. That's preserved along with two paleontologist. James Allen calls the fossil a well preserved and significant -- The woolly mammoths lived during what's called the price to seen ethnic one point eight million to 111000 years ago today it was a grassy valley. With herds of these extinct craters just Roman around. He believes these fragments could be ten or 111000 years old the big deal so we can study it gets -- -- gates. Which help us figure -- tectonic. I ethnicity but Sanders ball over there. Throughout this project trends may officials have had archeologists on the scene and a treasure trove of other artifacts has been uncovered. Who work here continues on schedule but now everyone's on the lookout for another piece of what one -- crane operators scooped up. And set -- Few people tried to mis managed just -- but it just looked to -- -- -- Vieira. But certainly if somebody were to come and they really think there may be at Huskers some hair since again we might if its -- hope to dip further excavation to.

This transcript has been automatically generated and may not be 100% accurate.

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