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January 12, 2007
The dinosaurs, along with the majority of all other animal species on Earth, went extinct approximately 65 million years ago. Some scientists believe that the impact of one large meteorite in the Yucatan Peninsula, in what is today Mexico, caused the mass extinction, while others argue that there must have been many meteorite impacts or other stresses around the same time. Donna Whitney, a U of M geology professor, took part in a new study that provides compelling evidence that â€śone and only one impactâ€? caused the mass extinction.
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