PAUL D STEWART / SCIENCE PHOTO LIBRARY PAUL D STEWART / SCIENCE PHOTO LIBRARY
Restoration of the Iguanodon by Alice B. Woodward from Lydekker's The Royal Natural History" Frederick Warne and co, 1896. This is one of the first reconstructions to correctly show the Iguanodon's thumb spikes and a semi-bipedal gate - previous reconstructions placed the bone as a nose horn and often put all four feet firmly on the ground. Woodward had based her reconstruction on the recently installed skeleton in the British Museum acquired in 1895 - itself a cast of Lois Dollo's Bernissart Iguanodon reconstructions. Gideon Mantell first hypothesised that the conical bone he found in Tilgate Quarry was a horn - and only half a century later, with the discovery of the Bernissart Iguanonodons in 1878 did it become quite clear the bone he had found was actually a modified thumb spike - possibly for defence or intraspecific competition.
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