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World’s Largest Arachnids – Eight-Foot-Long Scorpions of Ancient Seas

While the Emperor Scorpion and the South African Flat Rock Scorpion are, by today’s standards, huge and impressive, they pale in comparison to their extinct relatives.  Imagine, if you will, an 8-foot-long scorpion sporting spiked claws that extended 2 feet from its body!  Well, thanks to newly uncovered fossil evidence, we need not imagine so hard – such fantastic beasts did indeed exist.  Known as Sea Scorpions or Pterygotid Eurypterids, some, such as Acutiramus, were larger than a person!

Natural History

Sea Scorpions are the ancestors of modern-day scorpions, and perhaps of all Arachnids.  Pre-dating the dinosaurs, they emerged approximately 470 million years ago, and roamed the seas (and fresh waters) for over 100 million years.  Read More »

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