Paper, 'Memoir on a portion of the lower jaw of the iguanodon and other saurian remains discovered in the strata of Tilgate Forest in Sussex' by Gideon Algernon Mantell Illustrations for this paper have been separated from the manuscript and are found at PT/75/1/4-9. Subject: Zoology / Palaeontology Published in Philosophical Transactions as 'Memoir on a portion of the lower jaw of the iguanodon, and on the remains of the hylæosaurus and other saurians, discovered in the strata of Tilgate Forest, in Sussex'. Written by Mantell at Crescent Lodge, Clapham Common [London]. Received by the Royal Society on 8 February 1841. Read 18 February 1841. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 4, 1843. January 1841