realistic polacanthus dinosaur of jurassic period, prehistoric extinct giant reptile cartoon realistic animal

dinosaur period extinct cartoon triceratops reptile animal realistic jurassic giant prehistoric vector illustration ancient creature prehistory isolated predator print paleontology drawing dino white history herbivorous character era background graphic bone jaws tail set pterodactyl funny color skull silhouette roar epoch tyrannosaurus dangerous diplodocus spine lizard monster old head fossil outline