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mass extinctions

The Oxford Companion to the Earth | 2000 | | Â© The Oxford Companion to the Earth 2000, originally published by Oxford University Press 2000. (Hide copyright information) Copyright

mass extinctions see extinctions and mass extinctions

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PAUL HANCOCK and BRIAN J. SKINNER. "mass extinctions." The Oxford Companion to the Earth. Oxford University Press. 2000. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.

PAUL HANCOCK and BRIAN J. SKINNER. "mass extinctions." The Oxford Companion to the Earth. Oxford University Press. 2000. Encyclopedia.com. (December 23, 2009). http://www.encyclopedia.com/doc/1O112-massextinctions.html

PAUL HANCOCK and BRIAN J. SKINNER. "mass extinctions." The Oxford Companion to the Earth. Oxford University Press. 2000. Retrieved December 23, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O112-massextinctions.html

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