by James Ross Kelly

Reasons To Believe : The Head and the Heart: Paleontologists Discover the Oldest Brain and Cardiovascular Systems


Credit: Grahbudd/Wikimedia Commons (http://en.wikipedia.org/wiki/File:Fuxianhuiafossil.jpg)

Credit: Grahbudd/Wikimedia Commons (http://en.wikipedia.org/wiki/File:Fuxianhuiafossil.jpg)

via Reasons To Believe : The Head and the Heart: Paleontologists Discover the Oldest Brain and Cardiovascular Systems.

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