The –est Paleontology

Earliest sea scorpion discovered in Iowa

Huge predator stalked ocean 460 million years ago

illustration of giant sea scorpion

SEA MONSTER  A new species of giant sea scorpion (illustrated) lived about 460 million years ago and may have used paddlelike limbs to swim.

Patrick Lynch/Yale Univ.

By Meghan Rosen

- More than 2 years ago

Giant scorpions may have terrorized the seas some 460 million years ago.