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Date: 2008-12-03 11:13:30Historical geology Extinction event Diatom Radiolarian Permian–Triassic extinction event Andrew H. Knoll Permian Biomineralization Planetary science Biology Astronomy | Microsoft PowerPoint - Knoll Monaco for posting.pptAdd to Reading ListSource URL: www.scor-int.orgDownload Document from Source WebsiteFile Size: 1,88 MBShare Document on Facebook |