November 18, 2011

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Through the analysis of various types of dating techniques on well-preserved sedimentary sections from south China to Tibet, researchers determined that the mass extinction peaked about 252.28 million years ago and lasted less than 200,000 years, with most of the extinction lasting about 20,000 years. The conclusion of this study says extinctions of most marine and terrestrial life took place at the same time.Full Story

Source
University of Calgary

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