This 429 million-year-old trilobite eye is similar to those of modern insects - CNN
Aug 13, 2020 40 secs

Compared to older trilobites, which had slits for eyes, this trilobite is more representative of when they began to explore life in new environments -- so these critters needed to be able to watch for predators, obstacles and shelter.

The eyes of these trilobites adapted to widen and could look partly upward, Schoenemann said.

Each facet was about 35 micrometers in diameter, which suggests that this trilobite lived in a bright setting and needed to be able to navigate that brightness.

So this trilobite was active during the daytime and lived in shallow parts of the sea that were flooded with light, Schoenemann said.

"Fascinating in this research is to see what the eyes can tell you about the mode of life of a creature that had lived such a long time ago," Schoenemann said.


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