Imagine drifting through a prehistoric sea more than 500 million years ago. The water teems with bizarre creatures, but none strike terror quite like Anomalocaris ...

Long before humans walked the Earth, huge prehistoric animals roamed the planet until evolution eventually led to the emergence of new species. Arthropleura, the largest arthropod of the ...

Note: This list is compiled based on data presented in a report by BBC Wildlife Magazine. Anomalocaris was one of the first predators in the Cambrian seas. It could grow up to a metre long and had ...

A predator of the Cambrian was the giant, shrimplike Anomalocaris, which trapped its prey in fearsome mouthparts lined with hooks. Even stranger was the five-eyed Opabinia, which caught its ...

Their very names—Hallucigenia, Anomalocaris—testify to their strangeness. For decades they have fired the passions of researchers, fueling one of the great scientific controversies of the 20th ...