The world's oldest predator is a six-foot sea scorpion

A group of scientist from the Yale University has discovered the oldest known species of a sea scorpion, in a meteorite crater located in the Iowa River, in Winneshiek.

The "Pentecopterus decorahensis", named after an ancient Greek warship, lived 467 million years ago and grew to nearly six feet (1.5 meters) in length.

The animal belongs to the family of eurypterid, a group of aquatic arthropods that are ancestors of modern ticks, lobsters and spiders.