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Friday, September 10, 2010

Melonites multipora Sea Urchin

The Melonites multipora sea urchin fossil found in St. Louis, Missouri.  The creature existed in the Mississippian Period.  It was on display at the Smithsonian Museum of Natural History (August 2010).  The description said it was once the size of grapefruit before getting flattened during fossilization.

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