The eyes have it

Look: Ancient predator found 500 million years later with brain still intact

by Jennifer Walter
Updated: 
Originally Published: 
Animation by Sabrina Cappelli © Royal Ontario Museum

Shutterstock

500 million years ago, the most fearsome creatures in the ocean were radiodonts — predatory, shrimp-like organisms that reached just a few feet in length.

One of the smallest to ever exist was Stanleycaris hirpex.

The species ranged in size from one to just over eight centimeters long.

Animation by Sabrina Cappelli © Royal Ontario Museum
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