Researchers Pinpoint Date and Rate of Earth's Most Extreme Extinction (IMAGE)

University of Calgary

Researchers Pinpoint Date and Rate of Earth's Most Extreme Extinction

Caption

Charles Henderson (middle) of the University of Calgary collects material from a sedimentary layer in Shangsi, Sichuan Province, China. This was one of more important sections studied for ash layers and marine fossils used to pinpoint the dates and rate of Earth's massive extinction.

Credit

Charles Henderson

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