Stegosaurus: quick facts

Stegosaurus is the only plated dinosaur ever foundin western North America. The large triangular plates thatran along its back were probably arranged in a double row, and its tail was armed with four

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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.