Web Directory

» Big Crater Seen beneath Ice Sheet
   The BBC provides news that what appears to be a 480km-wide crater has been detected under the East Antarctic Ice Sheet and may have been responsible for the extinction at the boundary of the Permian and Triassic.
   http://news.bbc.co.uk/1/hi/sci/tech/5045024.stm

» Great Extinction Came in Phases
   BBC News describes how Chinese rock evidence suggests that the biggest of the Earth's mass extinctions did not happen in one cataclysmic event.
   http://news.bbc.co.uk/1/hi/sci/tech/4398401.stm

» Permian-Triassic Extinction
   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.
   http://www.pbs.org/wgbh/evolution/library/03/2/l_032_02.html

» The Great Permian Extinction Debate
   Paper by James A. Marusek, providing a hypothesis of the mechanisms behind the greatest mass extinction of life on Earth, the Permian extinction. The hypothesis is applicable to 5 of the 6 Great mass extinction events that occurred at the end of the Botom
   http://www.breadandbutterscience.com/Permian.pdf

» The Permian Mass Extinction
   Discusses the geologic setting, possible causes, and taxa affected by the extinction event at the end of the Paleozoic.
   http://hannover.park.org/Canada/Museum/extinction/permass.html

» The Permian-Triassic Extinction
   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.
   http://geology.about.com/od/extinction/a/aa_permotrias.htm

» The Permo-Triassic Extinction
   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.
   http://palaeo.gly.bris.ac.uk/Palaeofiles/Permian/intro.html