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Letters to Nature
Nature 324, 359 - 361 (27 November 1986); doi:10.1038/324359a0

Baryonyx, a remarkable new theropod dinosaur

Alan J. Charig & Angela C. Milner

Department of Palaeontology, British Museum (Natural History), Cromwell Road, London SW7 5BD, UK

An extremely large claw bone, some 30 cm long, was found in Wealden (Lower Cretaceous) deposits in a Surrey claypit in January 1983. This led to the discovery the following month of the well-preserved skeleton of a new large theropod dinosaur. Only one other theropod specimen comprising more than a few bones had ever been found in Britain, and that discovery was more than a century ago. Indeed, no large theropod, reasonably complete, had previously been discovered in Lower Cretaceous rocks anywhere in the world. Our study so far suggests that the Surrey dinosaur was a typical large theropod in certain respects, resembling, for example Allosaurus 1. In several other respects, however, it differs sufficiently from all known dinosaurs to merit designation as the representative of a new species, genus and family.

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