A new hadrosauriform dinosaur from the Wessex Formation, Wealden Group (Early Cretaceous), of the Isle of Wight, southern England

A new genus and species of non-hadrosaurid hadrosauriform dinosaur, Brighstoneus simmondsi gen. et sp. nov., is described from the Lower Cretaceous Wessex Formation Isle Wight. The taxon has two autapomorphies, a nasal having modest bulla with convex sides, primary accessory ridges on lingual aspect maxillary crown. dentary at least 28 alveolar positions, which highest number recorded in an ornithopod non-parallel sided alveoli, creating character combination that unique within Iguanodontia. fauna Barremian–Aptian Wealden Group both Wight mainland England been represented for almost century by just taxa, robust Iguanodon bernissartensis more gracile Mantellisaurus atherfieldensis, referred material often being fragmentary or based unassociated elements. This discovery increases known diversity and, together recent discoveries Spain, suggests their upper Europe was considerably wider than initially realized. find also important implications validity atherfieldensis hypodigm, reassessment existing suggested.http://zoobank.org/urn:lsid:zoobank.org:pub:31F0D48F-C1DA-406E-A811-1F5937ED19F4