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| - In the nineteenth century Reverend William Darwin Fox collected two small thighbones near Cowleaze Chine on the southwest coast of the Isle of Wight. In 1868 he incorrectly suggested these may have come from the same individual that had in 1848 been uncovered for Gideon Mantell as a fossil of Iguanodon, and which in 1869 would be named as the new genus Hypsilophodon. Regardless, both femora, made part of the collection of the British Museum of Natural History as specimens BMNH R184 and BMNH R185, would be commonly referred to the latter genus. However, in 1975 Peter Galton named them as a new species of Dryosaurus: Dryosaurus canaliculatus. The specific name means "with a small channel" in Latin, referring to a distinct groove between the condyles of the lower thighbone.[1] In 1977 Galton named a new genus for them: Valdosaurus, the name being derived from Latin Valdus, "Wealden", a reference to the Wealden Group. Its type species, D. canaliculatus, was thus renamed V. canaliculatus.[2] A second species, V. nigeriensis, was described by Galton and Philippe Taquet from younger rocks from Niger in 1982;[3] this has since been transferred to its own genus, Elrhazosaurus. In 1998 William Blows inadvertently named another species, Valdosaurus dextrapoda, by including this name in a fauna list,[4] but this was an error, and the species has never been supported.[5][6] Lacking description, it is a nomen nudum.
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