devonian : Definition, Usages, News and More

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di voh nee uhn

  • n  from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites

  • Philip Anderson in Kansas City Star
    The Devonian extinction is not nearly as well understood as some other extinction events,Anderson said. "Dunkleosteus had thick armor on its skulls and no armor behind, so it would have been very front-heavy. I often wonder if that was the...

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