Definition
Brontosaurus is a genus of gigantic, long-necked, herbivorous sauropod dinosaurs. It lived during the Late Jurassic period. Imagine a massive, four-legged beast gently munching on ferns. 🦕 For many years, it was considered the same as Apatosaurus, but recent research suggests it's a distinct genus after all! They roamed what is now North America. They are characterized by their immense size, long necks, and whip-like tails.