Andrew A. Farke wrote-
Paul, G. S. 2006. Turning the old into the new: a separate genus for the gracile iguanodont from the Wealden of England; pp. 69-77 in K. Carpenter (ed.), Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Indiana University Press, Bloomington.
Iguanodon atherfieldensis is renamed Mantellisaurus atherfieldensis.
Mickey Mortimer