Chasmosaurus: quick facts

Chasmosaurus is one of the best known ceratopsians, because many more specimens have been discovered since thefirst remains were found in Alberta, Canada in 1901. Chasmosaurus had a small horn on its

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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.