IGUANODON, a large extinct herbivorous land reptile from the Wealden formation of western Europe, almost completely known by numerous skeletons from Bernissart, near Mons, Belgium.
When unworn the teeth are spatulate and crimped or serrated round the edge, closely resembling those of the existing Central American lizard, Iguana - hence the name Iguanodon (Gr.
The earliest remains of Iguanodon were found by Dr G.
Mantell in the Wealden formation of Sussex, and a large part of the skeleton, lacking the head, was subsequently discovered in a block of ragstone in the Lower Greensand near i Skeleton of Iguanodon bernissartensis.
The typical species, Iguanodon mantelli, measures 5 to 6 metres in length, while I.
The remains of Iguanodon occur in the Hythe beds.
The Cretaceous beds are not extensive, but the Wealden deposits of Bernissart, with their numerous remains of Iguanodon, and the chalk of the district about the Dutch frontier near Maastricht, with its very late Cretaceous fauna, are of special interest.