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Press Release 09-031

Geologic Findings Undermine Theories of Permian Mass Extinction Timing

South Africa's Karoo Basin Shows No Indication of "Boundary Event Rock Bed"

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Photo of rock formations in the Karoo Basin in South Africa.

The Karoo Basin in South Africa holds the world's best record of the Permian Mass Extinction.

Credit: Robert Gastaldo, Colby College


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Photo of scientist Sophie Newbury studying the dead zone, a rock layer in Karoo Basin.

Scientist Sophie Newbury studies the "dead zone," a rock layer in Karoo Basin.

Credit: Robert Gastaldo, Colby College


Download the high-resolution JPG version of the image. (136 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.