The pterosaurian remains from the Grunbach Formation (Campanian, Gosau Group) of Austria: a reappraisal of 'Ornithocheirus buenzeli'

The fragmentary pterosaur material from the Campanian Grunbach Formation (Gosau Group) of Muthmannsdorf (Austria), previously identified as Ornithocheirus buenzeli Bunzel, 1871, is revised. A lower jaw fragment shows a helical type of articulation, which is known in several families of pterosaurs, and cannot be identified with great accuracy. The proximal part of a humerus shows distinctive features that allow it to be referred to as a member of the family Azhdarchidae, which is widespread in the Late Cretaceous Period of Europe. Ornithocheirus buenzeli is considered a nomen dubium. The pterosaur material from the Grunbach Formation cannot be used as evidence for the presence of ornithocheirids in the Late Cretaceous of Europe.