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

A newfound fossil tail is changing what we know about Spinosaurus—and stretching our understanding of how and where dinosaurs lived. For more iconic storytelling like this, subscribe to National Geographic: https://on.natgeo.com/3aJdDvL | National Geographic

Scientists believe that this aquatic dinosaur was the largest predator to ever roam the planet. | National Geographic