An intro to one of kids' favorite topics, dinosaurs. Mentions geological eras, Mesozoic Era, Triassic, Jurassic, and Cretaceous Periods, dinosaur extinction, fossils, paleontologists, reptiles, herbivores, carnivores, and omnivores, various kinds of dinosaurs, ancient reptilian non-dinosaurs, and the evolution of dinosaurs into birds. Please contribute $1 to Sanger Academy, to help these free videos coming: / larrysanger