Half a billion years ago, the first true eye emerged in Earth’s oceans. Fossils now reveal what that ancient crystal vision could actually see.

Add Yahoo as a preferred source to see more of our stories on Google. A variety of trilobite fossils embedded in sediment. Trilobites, a group of extinct marine arthropods, had a hidden third eye — ...

Five hundred million years ago, the oceans teemed with trillions of trilobites - a now extinct group of marine arthropods ruling the seas for more than 270 million years. Over 20,000 species have been ...

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Boulder, Colo., USA: Thanks to their easily fossilized exoskeleton, trilobites largely dominate the fossil record of early complex animal life. However, trilobite appendages and the anatomy of the ...

Excavations at a 2,000-year-old settlement in Spain have yielded the first ever trilobite fossil from Roman times. Found in a trash heap associated with a high-status household, the specimen appears ...

Trilobites first appear early in the Cambrian and are one of the earliest examples of arthropods, the group that includes all insects. They flourished for over 100 million years, leaving fossils that ...

A mysterious, prehistoric marine creature has spilled its guts. For the first time, scientists have unearthed a fossilized trilobite whose final meals were preserved within its digestive system.

Hundreds of millions of years before anthropogenic climate change was ever a thing, life on Earth suffered mass extinctions due to climate change brought on by natural causes. Even so, there were ...