"Dinos A to Z: Iguanodon" introduces the iguanodon, a widespread herbivorous dinosaur that lived more than 110 million years ago. The video explains key paleontology concepts, including fossils, dinosaur classification, diet, anatomy, and scientific inference from fossil evidence. It highlights the meaning of the name "iguana tooth," the iguanodon’s large size, thumb spike, long tongue, beak-shaped nose, and ridged teeth used for grinding vegetation. The narration also shows how scientists revised early ideas after discovering more fossils, making this a strong fit for earth science and prehistoric life topics in school curricula.