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Scientists have uncovered the fossilized claw of a 390 million year old sea scorpion in a German quarry. They estimate that the cannibalistic creature, which has been named Jaekelopterus rhenaniae, was nearly 8 ft (2.5 m) long, making it at least 1.5 ft (46 cm) longer than any previously known eurypterid, or prehistoric sea scorpion. While fossil record has long shown that ancient arthropods were much bigger than they are now, this discovery suggests that prehistoric spiders, insects, and crabs were significantly larger than previously thought.