Edentulous pterosaurs from the Cambridge Greensand (Cretaceous) of eastern England with a review of Ornithostoma Seeley, 1871

A re-examination of fossil material from the Late Cretaceous Cambridge Greensand Member (CGM) West Melbury Marly Chalk Formation revealed a number new specimens edentulous pterosaur jaw fragments previously identified as shark fin spines and fish jaws accessioned under epithet ‘cestraciontid finray’ ‘jaws fish’. These are now recognised pterosaurian tips referred to Ornithostoma sedgwicki Seeley, 1891 Azhdarchoidea indet. This increases diversity pterosaurs CGM. The eastern England is reviewed. holotype specimen confirmed fragment premaxilla/maxilla non-tapejarid azhdarchoid on account conspicuous curvature dorsal occlusal margins posteriorly presence small neural foramina lateral margins. Neural not seen members Pteranodontia, group which O. was included previously. referral eliminates single known Lower occurrence Pteranodontidae, restricting temporal range this taxon Upper Cretaceous. Postcranial type horizon regarded indeterminate Pterosauria.