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Scienceray > Authors > the_silver_beetles
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the_silver_beetles |
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 | | The Great Mass Extinction of the End-Permian | | by the_silver_beetles, Jan 13, 2008 | | The End-Permian extinction is by far the greatest mass extinction to have taken place, causing the extinction of approximately 90% of all species on earth which almost ended life on earth. What caused this catastrophic event and what took place when it did strike? | | Comments(0) Liked It: 30 |
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 | | The Porifera | | by the_silver_beetles, Jan 17, 2008 | | A look at our early ancestors the porifera, the first multicellular animals. | | Comments(0) Liked It: 27 |
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