Scientists Found a 520-Million-Year-Old Miracle: a Fossil With Brains and Guts Intact

A remarkable fossilized larva has been discovered by scientists with its brain and guts still intact.
The fossilized creature is one of the earliest ancestors of a group known as arthropods, which includes insects, crabs, and lobsters.
A unique window into the past, the ancient critter has allowed experts a chance to better understand evolutionary links between the arthropods of the pasta and those of the present day. 

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