July 22 , 2016

The proximal end of the humerus of a pterosaur (Azhdarchidae indet.) is described from the Rybushka Formation sediments (Upper Cretaceous, Lower Campanian) of the White Lake locality in the Saratov Region. The proximal articular surface is saddle-shaped, with a slightly convex profile in the frontal plane. The most part of the set-back of the articular surface is shifted ventrally. A large hole in the front side of pneumatization is located ventral to the base deltopectoral ridge near the proximal articular surface. The humeral head slightly tilted from the diaphysis and almost hangs over the back of the diaphysis. The humerus may belong to Volgadraco bogolubovi Averianov, Arkhangelsky et Pervushov, 2008, described from the Rybushka Formation Shirokii Karamysh 2 locality in the Saratov Region.

Averyanov, A.O., Arkhangelsky, M.S. & Merkulov, S.M. (2016)
Humerus of an azhdarchid (Pterosauria, Azhdarchidae) from the Upper Cretaceous of the Saratov Region.
Paleontological Journal 50 (4): 93-97 (Russian edition)
DOI: 10.7868 / S0031031X16040036