My Science School

                         The modern white shark reaches a length of 6 m, making it one of the most feared predators of the seas. But an extinct shark may have been 12 m long, and weighed around ten times as much as the white shark. This shark, called Carcharocles, lived about 15 million years ago, and its bulk was the size of a bus. Only its huge teeth have survived, allowing palaeontologists (scientists who study fossils) to calculate its actual size. The jaws of the mega tooth shark would have been large enough to swallow a car.

Picture credit: google