Web Directory

» Animal Extinctions in the Fossil Record: A Developmental Paradigm
   Article by Vaclav Petr discussing the possible causes of extinctions.
   http://www.mprinstitute.org/vaclav/Develop.htm

» Extinction
   A number of extinction concepts are discussed and loosely defined, followed by a survey of some important extinction and "extinction-like" events, primarily from the Phanerozoic.
   http://www.peripatus.gen.nz/paleontology/extinction.html

» Extinctions: Cycles of Life and Death Through Time
   Covers patterns and periodicity of extinction, with discussions of major mass extinctions and minor extinction events.
   http://park.org/Canada/Museum/extinction/homepg.html

» Mass Extinction
   A mathematical model for mass extinction.
   http://www.lassp.cornell.edu/newmme/science/extinction.html

» Our Nemesis?
   Article on a paper by David Raup and John Sepkoski, two respected paleontologists, making the remarkable claim that great catastrophes occur on the Earth every 26 million years,
   http://www.thekeyboard.org.uk/Our%20Nemesis.htm

» The Cosmic Clock, the Cycle of Terrestrial Mass Extinctions
   Paper by J. A. Marusek. A dual cycle of extinction events is observed and well ordered in geological time. Two primary mechanisms, Oort cloud comet impacts and nearby supernova events are synchronized to the passage of the solar system through the spiral
   http://www.lpi.usra.edu/meetings/lpsc2005/pdf/1009.pdf

» The Late Devonian Mass Extinction
   A professional technical paper discussing whether the Late Devonian (Frasnian-Famennian) mass extinction was initiated by an extraterrestrial impact or an earth-bound event.
   http://www.lpi.usra.edu/meetings/impact2000/pdf/3072.pdf

» The Role of Extinction in Evolution
   Paper by David M Raup, Department of Geophysical Sciences, University of Chicago.
   http://www.pnas.org/content/91/15/6758.full.pdf

» What Factors May Lead to Periodic Mass Extinctions?
   Article by Steve Brusatte.
   http://www.dinodata.org/index.php?option=com_content&task=view&id=703&Itemid=25