Meet Mosasaurus, the fierce marine reptile that ruled the seas about 66 million years ago during the Late Cretaceous! With a powerful, streamlined body and sharp, conical teeth, it hunted fish, ammonites, and even smaller marine reptiles in warm, shallow seas. Sharing the ocean with other incredible marine animals like the turtle Archelon and the shark Cretoxyrhina, Mosasaurus was truly an apex predator of its time, dominating its prehistoric underwater world. 🦕Follow Daily Dino Guy for more fa

The biggest dinosaur ever discovered—belonging to a group known as titanosaurs— is thought to have weighed as much as 12 elephants. | National Geographic