Geologic Findings Undermine Theories of Permian Mass Extinction Timing

(PhysOrg.com) -- New scientific findings by geologist Robert Gastaldo of Colby College in Waterville, Maine, and colleagues call into question popular theories about the largest mass extinction in Earth's history.

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<p><a href="http://www.physorg.com/news155238422.html">Geologic Findings Undermine Theories of Permian Mass Extinction Timing</a></p> <p>(PhysOrg.com) -- New scientific findings by geologist Robert Gastaldo of Colby College in Waterville, Maine, and colleagues call into question popular theories about the largest mass extinction in Earth's history.</p>