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Daddy Longlegs Used To Be Even More Terrifying

New fossil shows that the primitive arachnids had an extra set of eyes. Cue heebie-jeebies.

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But a new 305-million-year-old fossil found in France shows that these ancient arachnids had four eyes, according to new research published in Current Biology.


(Merciless teasing from other arachnids was not reported.)


Modern (and adorable) harvestmen embryos only have a single pair of median eyes.

AMNH/P. Sharma

The white arrows show lateral eye-field areas, which never actually develop. The black arrows show the domains that eventually form the median eyes.