Invertebrate Paleontology

What was the largest bug to ever live on Earth?
Answered by Animal Planet
  • Animal Planet

    Animal Planet

  1. The giant sea scorpion (Pterygotid eurypterid) is estimated to have grown to a length of more than 8 feet (2.4 meters), based on a discovery by paleontologist Markus Poschmann. While searching for fossils in Germany, he noticed what he called a "dark patch of organic matter" that turned out to be an 18-inch (0.45 meter) long claw from a sea scorpion. Poschmann matched the claw's proportions to the rest of the sea scorpion's body to determine that the creature must have been more than 8 feet (2.4 meters) long. These giant sea scorpions ruled the Earth millions of years ago, devouring big fish and each other; they were the ancestors of today's scorpions and possibly spiders and other arthropods.

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