WASHINGTON (AFP) – Meat-eating dinosaurs the size of a small chicken roamed areas of North America 75 million years ago, according to research by Canadian paleontologists. The mini-dinosaur, similar in appearance to the Velociraptor, is named Hesperonychus elizabethae and is the smallest carnivorous dinosaur known to have lived in North America. "Hesperonychus is currently the smallest dinosaur known from North America," said University of Calgary paleontologist Nick Longrich. "Its discovery just emphasizes how little we actually know, and it raises the possibility that there are even smaller ones out there." Longrich, together with University of Alberta paleontologist Philip Currie, are...