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Published online 10 April 2003 | Nature | doi:10.1038/news030407-7

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Mass-extinction controversy flares again

Core from asteroid crater fuels debate on what wiped out the dinosaurs.

A claim that the asteroid that struck Mexico 65 million years ago did not cause the mass extinction that wiped out dinosaurs triggered heated debate at a meeting this week.

The announcement is based on preliminary analysis of the first core drilled into the 185-kilometre Chicxulub asteroid crater near the Yucatan Peninsula.

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