ODPTC 5 Biggest Extinction Events

Science & Technology at Scientific American.com: The Woodstock of Evolution -- The World Summit on Evolution, held in the Galapagos Islands, revealed a science rich in history and tradition, data and theory, as well as controversy and debate: "Interestingly, despite the impact of the five biggest mass extinctions (Ordovician 439 Ma, Devonian 367 Ma, Permian 245 Ma, Triassic 208 Ma, Cretaceous 65 Ma), many organism groups passed through all of these extinction episodes safely, such as the cockroach. 'What is amazing is not only the extent of loss, but how fast life bounces back,' Fortey concluded."

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