New research has revealed just how voracious these dinosaurs were, with their average tooth worn away in less than two months as they consumed enormous amounts of plants. Some of Earth's most ...

Differing dino teeth. Some sauropods, like Apatosaurus, had simple teeth, more similar to a meat-eater, such as the theropod Allosaurus, than to the small-bodied Nanosaurus, another herbivore.

That's equivalent to the weight of about one and a half Asian elephants. It's a lot of clay to search through for dinosaur teeth that in some cases are less than a millimetre in size. So why is Simon ...