On the east coast of North America, dinosaur fossils are rare finds. Owing to several factors, such as the mass-urbanization of the eastern seaboard, fossils from these incredible creatures are few and far between. Even the most complete skeletons are incomplete, making nearly any stray chunk of bone from the area of scientific interest. North American dinosaurs. Image credit: Davide Bonadonna. Discovered in the early 80s, the Ellisdale fossil site...