Iguanodon Prestwichii , a new Species from the Kimmeridge Clay, distinguished from I. Mantelli of the Wealden Formation in the S.E. of England and Isle of Wight by Differences in the Shape of the Vertebral Centra, by fewer than five Sacral Vertebrœ, by the simpler Character of its Tooth-serrature, &·c., founded on numerous fossil remains lately discovered at Cumnor, near Oxford

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Abstract
These fossils, which Mr. Prestwich has kindly given me an opportunity of studying, are, for the extent of information they convey of nearly every part of the skeleton, the most important Iguanodont remains yet discovered at any one time in this country. The only others that may vie with them are those in the well-known Mantellian Maidstone block, in the British Museum, and some, said to represent the greater part of a skeleton, reported to have been found several years since at Hastings, preserved in a private collection, inaccessible, which in their entirety have not, so far as I can learn, ever been examined by an anatomist. The Cumnor fossils appear to have formed part of one skeleton. They represent an animal between 10 and 12 feet long, which had not reached maturity. Its head was lizard-like, with large eyes and capacious nostrils. Its neck was very flexible and moderately long. Its trunk, particularly the thoracic region, was long, and borne on stout clawed limbs, of which the hinder were much stouter than the fore. The tail, of considerable length, tapered very gradually; and for more than half its length it was flattened laterally. Unfortunately, as too frequently happens, the removal of the fossils by the unskilful hands of day-labourers has occasioned much damage and many losses. The bones had been already much crushed by the pressure of the beds ; but many of the fractures are plainly quite recent. These injuries are not, however, without some compensating circumstances ;

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