Permian-Triassic Extinction
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Scan day: 17 February 2014 UTC
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Description: Short video showing rock layers being laid down during the Permian and Triassic periods, and background information on the mass extinctions that occurred at this time.
Evolution: Library: Permian-Triassic Extinction shows rock layers laid down during the Permian and Triassic periods. The Permian layers contain abundant animal fossils and fossilized traces of animals, while the Triassic layers are almost devoid of fossils, suggesting a mass extinction event occurred 250 million years ago, at the end of the Permian.
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| Page title: | Evolution: Library: Permian-Triassic Extinction |
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| IP-address: | 54.211.64.28 |