12064_2008_53_Article 1..9

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Date: 2011-08-10 05:51:03 Background extinction rate David M. Raup Extinction Biology Ecology Nature Nautiloids Jack Sepkoski Extinction event		12064_2008_53_Article 1..9 Add to Reading List Source URL: www.itp.uni-bremen.de Download Document from Source Website File Size: 657,02 KB Share Document on Facebook

	COVER A Classopollis meyeriana conifer pollen grain (~30 micrometers across) preserved in lake sediments deposited just after a massive, volcano-induced extinction event ~200 million years ago. This fossilized pollen gr DocID: 1sPbN - View Document
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