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Research Shows Earth's Earliest Animal Ecosystem Was Complex and Included Sexual Reproduction


March 20, 2008

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Paleontologists at the University of California-Riverside and the South Australian Museum, studying ancient fossils they excavated in the South Australian outback, argue that Earth's ecosystem has been complex for hundreds of millions of years--at least since around 565 million years ago.  Full Story

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University of California - Riverside

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