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Incredible Living Fossils: Horseshoe Crabs

Also known as the King Crab, the Horseshoe Crab is not actually a crab at all, as it’s much more closely related to spiders and mites. 

LivingFossils2Horsehoecrab

Horseshoe Crab-type creatures started showing up around 400 million years ago and around 170 million years later, the species evolved to what we still see today.

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