When the paleontologist Michael D’Emic cut into the bones of Majungasaurus, a relative of Tyrannosaurus rex that roamed Madagascar 70 million years ago, he suspected that surprises might be hiding in them. But what he found defied all expectations. Majungasaurus adults measured up to 7 meters from snout to tail and could weigh 1,000 kilograms. Paleontologists had thought that big dinosaurs like...
