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.

Trilobites, prehistoric sea creatures, had so-called median eyes, single eyes on their foreheads, in addition to their compound eyes, research conducted by Dr. Brigitte Schoenemann at the University ...

Eyes don't typically appear in the fossil record, but researchers were able to study the well-preserved and fossilized internal structure of a 429 million-year-old trilobite eye. Surprisingly, they ...

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 ...

"Overall, everything about this compound eye looks modern—“comparable to that of living bees, dragonflies and many diurnal [daylight-dwelling] Crustaceans,” the researchers write. That would show just ...

Researchers have detected previously overlooked eyes whose form and function could help to improve the evolutionary classification of archaic arthropods. Trilobites, prehistoric sea creatures, had ...