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Did an Impact Trigger the Permian-Triassic Extinction?

Did an Impact Trigger the Permian-Triassic Extinction?

This resource, authored by David Morrison, contains the National Aeronautics and Space Administration's Astrobiology Institute news story on new evidence of a 251-million year-old impact crater off the western coast of Australia that may have caused the "Great Dying", the Permian-Triassic extinction event.

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