Hadrosaurus foulkii

Hadrosaurus foulkii is a genus of North American hadrosaurs, a type of herbivorous, duck-billed dinosaur from the Late Cretaceous period. The first recognized dinosaur skeleton found in North America was of a hadrosaur, discovered in Haddonfield, New Jersey, in 1858 and named Hadrosaurus foulkii by Joseph Leidy. This discovery significantly influenced early views on dinosaur life, with Leidy suggesting the animal was likely amphibious. Duck-billed dinosaurs, or hadrosaurs, are characterized by a jaw elongated into a beak-like snout. Fossils of these dinosaurs have been found in various locations, including Antarctica, indicating a diverse ecosystem millions of years ago.123