What are the strangest prehistoric creatures you can recall? Is the Helicoprion one of them? How about the Glyptodon. It's difficult to image, but there was once a time where our planet was host to a wilder, more dangerous, and by far scarier place. Modern day's toughest predators such as the great white shark, tiger, bear, and lion look feeble in comparison to some of the hulking beasts which terrorized the planet back then..