"Dinos A to Z: Hadrosaurus" introduces the Hadrosaurus, a duck-billed herbivorous dinosaur that lived about 75 million years ago. The video explains key paleontology concepts, including fossils, skeleton reconstruction, and how scientists use evidence to revise ideas about prehistoric life. It covers Hadrosaurus features such as its beak, plant-based diet, herd behavior, egg-laying reproduction, movement on two and four legs, and adaptations for escaping predators. The video also highlights the 1858 New Jersey fossil discovery and the dinosaur’s importance as the first mounted dinosaur skeleton displayed to the public. This science and history content supports curriculum topics in prehistoric life, Earth history, scientific inquiry, and vocabulary development.