Acrocanthosaurus: quick facts

Acrocanthosaurus is one of the few allosaurids known to North America, with fragmentary remains having been found in Texas and Oklahoma. Its backwas marked by spines of up to 2 feet (60 cm) high in la

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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.