In fossilized fish eye, rods and cones preserved for 300 million years

December 24, 2014 12:11 AM

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Scientists have discovered a fossilized fish so well preserved that the rods and cones in its 300-million-year-old eyeballs are still visible under a scanning electron microscope.

It is the first time that fossilized photoreceptors from a vertebrate eye have ever been found, according to a paper published Wednesday in Nature Communications. The researchers say the discovery also suggests that fish have been seeing the world in color for at least 300 million years.

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