U.S. Fish & Wildlife Service The Horseshoe Crab

U.S. Fish & Wildlife Service The Horseshoe Crab Limulus polyphemus A Living Fossil A Primitive Ancient Creature Horseshoe crabs are evolutionary survivors that have remained relatively unchanged in appearance for 350 million years. The horseshoe crab is not actually a true crab, but a member of an ancient group of arthropods, closely related to ................
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