Brontosaurus: quick facts

Brontosaurus was a large diplodocid sauropod from the Late Jurassic of North America, famous as one of the classic dinosaurs of popular culture. For much of the twentieth century it was considered the

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Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.