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Four-eyed daddy longlegs fossil fills in evolutionary tree

April 10, 2014

x-ray scan of the harvestman fossil Living harvestmen, a group of arachnids more commonly known as daddy longlegs, have a single pair of eyes that help them navigate every continent except Antarctica. But a newly described, 305 million-year-old fossil shows that wasn't always the case. Research, led by scientists at the American Museum of Natural History and the University of Manchester, indicates that primitive harvestmen had two pairs of eyes, adding significant details to the evolutionary story of this highly successful group. Full Story

American Museum of Natural History

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