Callovosaurus: quick facts

Callovosaurus is known from incomplete materialdiscovered in England. It is the earliest known member of theiguanodont family, members of which walked on their hind legsbut descended to all fours when

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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.