"Dinos A to Z: Jaxartosaurus" introduces Jaxartosaurus, a duck-billed dinosaur that lived about 90 million years ago in what is now Kazakhstan. Using fossil evidence and scientific hypothesis, the video explains how paleontologists infer its size, habitat, body covering, crest, diet, and herd behavior from partial skull and jaw remains. Key concepts include fossils, paleontology, herbivore, hypothesis, adaptation, habitat, vegetation, predators, and prehistoric life. The video also defines the meaning of the dinosaur’s name, "Jaxartes river lizard," and connects fossil discoveries to river environments in Central Asia. This content supports science curriculum topics related to Earth history, life science, evidence-based reasoning, and how scientists reconstruct extinct organisms from limited remains.