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The largest scorpion to walk the Earth was the size of a baseball bat

Researchers used CT scans and fossil fragments from three sites to show the 1-meter predator had scorpion anatomy, officials said.

  • Researchers at London's Natural History Museum reclassified fossils of Praearcturus gigas as a giant scorpion, ending over 100 years of misidentification. The creature lived roughly 415 million years ago in what is now Great Britain.
  • Lead study author Richard Howard, Curator of Fossil Arthropods, identified the reclassification based on the specimen's sternum. Its triangular structure with a central groove matched the well-preserved Silurian scorpion Eramoscorpius, providing definitive fossil evidence.
  • Measuring roughly 3 feet long, P. gigas was a formidable predator with roughly 6-inch-long pincers, according to Flinders University's Russell Bicknell. Researchers hypothesize it led an amphibious lifestyle, feeding on primitive fish in ancient waters.
  • Not all experts agree; Jason Dunlop of Berlin's Museum of Natural History noted key scorpion features like the tail sting remain absent from the specimen. He cautioned that incomplete fossils make definitive interpretation difficult.
  • Elizabeth Dowding, chair of paleoenvironmental analysis at Friedrich-Alexander University, characterized the study as demonstrating revisionary science. She noted that re-examining existing fossils through consistent curiosity could potentially shift global understanding of this group's diversity.
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26 Articles

KRDOKRDO
+2 Reposted by 2 other sources
Center

By Shraddha Chakradhar, CNN. Imagine a massive scorpion the size of a baseball bat moving among moss-covered rocks and large, tree-like structures before slithering into a nearby stream. That's how a team of scientists describes what the largest scorpion known to date would have looked like as it roamed its environment roughly 415 million years ago in what is now the United Kingdom. To arrive at this fascinating new interpretation, experts revie…

·Colorado Springs, United States
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CNNCNN
+6 Reposted by 6 other sources
Lean Left

The largest scorpion to walk the Earth was more than 3 feet long

Scientists describe a baseball bat-size scorpion — the world’s largest — and suggest that the 400 million-year-old creature was also amphibious.

·Atlanta, United States
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Lean Left

Four hundred and fifteen million years ago, when life on the mainland was just taking its first steps, a huge predator dominated the flood plains of...

·Turin, Italy
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BBC News broke the news in United Kingdom on Friday, June 5, 2026.
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