We dive back in time and into the oceans over half a billion years ago. Watch out! It’s not Megalodon or giant sea reptiles like Mosasaurus you need to look out for . It’s a bizarre, unearthly looking creature called anomalocaris.

It looked like a nightmarish cross between a shrimp and a modern-day centipede. Two tentacles protruding from its face, each lined with razor-sharp teeth. This thing was about the size of your leg, and it had an insatiable appetite for other animals!

Prehistoric times were filled with plenty of other monsters and bizarre dinosaurs you've never heard of! I'm talking, a dinosaur that looked like a goose, was taller than your house, and with giant clawed arms that make those of the T-rex look even more bite-sized!

That and more in this list of jaw-dropping, spine-chilling prehistoric animals!

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