Sarcosuchus imperator, which translates to "flesh crocodile emperor," lived in Africa about 100 million years ago. It is believed to have grown to be as long as 40 feet. It is thought to have weighed as much as 8.75 tons, which is 17,500 pounds. Experts believed that it skulked the river banks, making its meals from fish and the like that it crushed in its jaws (click here for a photo of its skull next to a human). With jaws that measured around 6 feet and contained as many as 100 teeth, experts believe the SuperCroc also ate small dinosaurs.