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Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation

Map Showing Paleogeography During the Permian-Triassic Boundary 252 Million Years Ago

Caption: This shows paleogeography during the Permian-Triassic boundary extinction 252 million years ago.

Credit: Thomas Algeo

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Related news release: Global extinction: Gradual doom as bad as abrupt


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