These Ancient Spider Fossils Still Have Silvery, Shimmering Eyes

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According to (This article and its images were originally posted on Live Science February 13, 2019 at 08:03AM.)

(Cover Image)

This fossilized spider has teensy mirrors in its eyes.
Credit: Paul Seldon
Paleontologists working in South Korea found ancient spider fossils with still-glittering eyes.Spider fossils are rare, the researchers wrote in a paper published online Jan. 28 in the Journal of Systematic Paleontology. Their bodies are so soft that they typically decay entirely soon after death, leaving no trace unless they happen to end up trapped in amber. But 11 spiders from the Cretaceous period have turned up preserved in shale rock on the Korean peninsula. And two of the fossils included the still-shiny traces of sparkling eyes.

Those glittering bits are mirror structures in the eyes called tapetums that bounce light from the back of the eye back through the retina. Animals use them to improve their night vision, usually at the expense of some overall blurriness. [See 15 Stunning Animal Eyes — Rectangular Pupils to Wild Colors]

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This article and images were originally posted on [Live Science] February 13, 2019 at 08:03AM. Credit to the original author and Live Science | ESIST.T>G>S Recommended Articles Of The Day.

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