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microrobert
12-24-2014, 08:15 PM
Rods and cones preserved in ancient fossilized fish eye

"Rods and cones are not usually preserved, because these soft tissues are more fragile," said Gengo Tanaka.

http://cdnph.upi.com/sv/b/i/UPI-6731419433254/2014/1/14194405349378/Rods-and-cones-preserved-in-ancient-fossilized-fish-eye.jpg


Rods and cones, the two main photoreceptor cells, are vital to human sight -- converting visible electromagnetic radiation into information our brains can use. And it turns out, the biological technology has been around for more than 300 million years.

http://www.upi.com/Science_News/2014/12/24/Rods-and-cones-preserved-in-ancient-fossilized-fish-eye/6731419433254/#ixzz3MqtevvSi