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The Permo-Triassic Extinction - http://palaeo.gly.bris.ac.uk/Palaeofiles/Permian/intro.html
Information on the biggest extinction known to man with a paleontological overview, evidence for the extinction, the groups concerned and the possible causes of the devastation. |
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Permian-Triassic Extinction - http://www.pbs.org/wgbh/evolution/library/03/2/l_032_02.html
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. |
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The Permian Mass Extinction - http://hannover.park.org/Canada/Museum/extinction/permass.html
Discusses the geologic setting, possible causes, and taxa affected by the extinction event at the end of the Paleozoic. |
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Great Extinction Came in Phases - http://news.bbc.co.uk/1/hi/sci/tech/4398401.stm
BBC News describes how Chinese rock evidence suggests that the biggest of the Earth's mass extinctions did not happen in one cataclysmic event. |
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The Permian-Triassic Extinction - http://geology.about.com/od/extinction/a/aa_permotrias.htm
Article by Andrew Alden proposing that new evidence and old, both support a volcanic explanation for this mass extinction when nine tenths of all species disappeared. |