1. There is one hitch : Hadrosaurus needs a new head. 2. Hadrosaurus was the dinosaur that brought dinosaurs up from all four legs,3. Leidy called the creature " Hadrosaurus foulkii " after Foulke. 4. For more information about Hadrosaurus , go to www . hadrosaurus . com. 5. For more information about Hadrosaurus, go to www . hadrosaurus . com. 6. Unlike the fictional denizens of Jurassic Park, Hadrosaurus foulkii does not inspire terror. 7. Hadrosaurus actually started the first wave of dino-mania in the United States,8. Scientists later found many fossil skulls and skeletons of dinosaurs closely related to Hadrosaurus . 9. Joseph Leidy would name it Hadrosaurus . 10. When it was first identified nearly 150 years ago, Hadrosaurus opened the door to modern paleontology.