News of the WeekGeochemistry

Gasping for Air in Permian Hard Times

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Science  15 Apr 2005:
Vol. 308, Issue 5720, pp. 337
DOI: 10.1126/science.308.5720.337a

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Summary

On page 398, researchers hypothesize that low atmospheric oxygen late in the Permian period squeezed land animals into smaller, more fragmented areas at low altitudes, inducing extinctions while driving down diversity.