Surf these sites: BBC Evolution Weekend: Extinction Files - Mass Extinctions -- Mass extinctions, theories, the fossil record, FAQs, a glossary and more! Mass Extinction Underway -- Authoritative information about the current mass extinction of species of life on earth-- the sixth such "extinction spasm" since life began. Includes numerous links to additional information. Mass Extinctions Of The Phanerozoic -- Information about the greatest mass extinctions experienced by life on earth.
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