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Fossil reveals first known cardiovascular system

Credit: Nicholas Strausfeld Usage Restrictions: This visual may only be used in conjunction with reporting/posting of this news release.
Credit: Nicholas Strausfeld Usage Restrictions: This visual may only be used in conjunction with reporting/posting of this news release.
This image shows a schematic reconstruction of the animal, outlining the cardiovascular system in red, the brain and central nervous system in blue and the gut in green.
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