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Callovosaurus ("Callovian lizard") is a primitive Iguanodont dinosaur from the mid-Jurassic period in England. The diet of Callovosaurus, like that of other Iguanodonts, was plant material. The genus is often mistaken with Camptosaurus. Among its contemporaries were Lexovisaurus, Cetiosaurus, and the small pterosaur Dimorphodon. Predators of the same time period included Eustreptospondylus and Megalosaurus. Callovosaurus probably travelled in herds (based on behaviors of more well known ornithopods like Iguanodon) if it was to avoid being attacked and/or finished off by these predators.
The type species, C. leedsi, was first described by Lydekker in 1889 and redescribed by Galton in 1980.
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