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Regnosaurus was a huayangosaurid stegosaurid dinosaur from Early Cretaceous England. Its jaws were very similar to Huayangosaurus' jaws. People thought that this was an iguanodontid, scelidosaurid, stegosaurid (but then it also included ankylosaurids), Hylaeosaurus synonym and sauropod. It was found to have been a stegosaurid in 1993.

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