The terrifying creature "is the first real big predator" James Lamsdell, who led the study, said to the Associated Press. It was discovered in Iowa and is believed to have been there when the land was under the ocean.

Named after the Greek warship penteconter, the animal measured nearly six feet long and had two sets of legs making it well-equipped for hunting prey. It also had more appendages for maneuvering and bristles that may have been used for sensory purposes.

And, according to the Associated Press, the tail on this scorpion wasn't a stinger.

Not only is the discovery rare, but it also potentially revealed 10 million years of its group's history.

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Travelers walk around the baggage claim in the South Terminal at Hartsfield-Jackson Atlanta International Airport on Thursday, Nov. 6, 2025. Atlanta is among the airports where the FAA will reduce flights due to the shutdown, and airports are facing a shortage of air traffic controllers. 
(Miguel Martinez/ AJC)

Credit: Miguel Martinez-Jimenez