The most vicious creature of the prehistoric era, the Liopleurodon was a force to be reckoned with in the Jurassic period. Other marine life did not stand a chance against this sea monster.
It did look like the love-child of a crocodile and a manta ray, both equally terrifying creatures.
With sharp teeth and a body that could grow up to 21-feet, this animal was unbeatable. So, what could make something so frightening go extinct? Evolution.