Fossils might give a good image of what dinosaurs looked like, but they can also teach scientists what they sounded like. The Parasaurolophus is a duck-billed dinosaur with a unique crest that lived ...

One such creature, a herbivorous hadrosaur named Parasaurolophus tubicen, would have been responsible for the fearsome calls described at the start of this article. (You can listen to the sound in the ...