D Mosasaurus

Like Tylosaurus, this fearsome marine predator was a Late Cretaceous mosasaur. But it was much bigger, growing to more than 59 ft (18 m) long—making it one of the most powerful oceanic hunters that has ever lived.


swept from side to side to drive the animal through the water

. Winglike flippers enabled pliosaurs and plesiosaurs to "fly" through the water, like giant, prehistoric penguins ffilSPiPi^

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