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Sunday, November 22, 2009

Photo: Ancient Meteor Blast Peppered Mammoths With "Shrapnel"


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This Siberian bison skull contains numerous pockmarks that scientists say were made by micrometeorites thrown off by a meteor impact 34,000 years ago.

Similar marks were found on seven mammoth tusks from the same period, the researchers say.

Photograph courtesy Richard Firestone/LBL