On the structure of the jaws and teeth of the iguanodon

The recent discovery of the right dentary bone of the lower jaw of an adult Iguanodon with teeth, having enabled the author, with the aid afforded by other specimens, to determine the structure of the maxillary organs of that gigantic herbivorous reptile, the result of his lnvestiaations are embodied in the present communication. The first memoir of the author on the teeth of the Iguanodon was published in the Philosophical Transactions for 1825; but owing to the fragmentary and water-worn condition in which the fossil remains of terrestrial vertebrated animals occur in fluviatile deposits, in consequence of these strata consisting of materials transported from far-distant lands, nearly a quarter of a century elapsed before any portion of the jaw with teeth was discovered.