1. A. O. Averianov, “New Records of Azhdarchids (Pterosauria, Azhdarchidae) from the Late Cretaceous of Russia, Kazakhstan, and Central Asia,” Paleontol. Zh., No. 2, 73–79 (2007) [Paleontol. J. 41 (2), 189–197 (2007)].
2. A. O. Averianov, M. S. Arkhangelsky, E. M. Pervushov, and A. V. Ivanov “A New Record of an Azhdarchid (Pterosauria: Azhdarchidae) from the Upper Cretaceous of the Volga Region,” Paleontol. Zh., No. 4, 91–97 (2005) [Paleontol. J. 39 (4), 433–439 (2005)].
3. D. Baird and P. M. Galton, “Pterosaur Bones from the Upper Cretaceous of Delaware,” J. Vertebr. Paleontol. 1(1), 67–71 (1981).
4. N. N. Bakhurina and D. M. Unwin, “A Survey of Pterosaurs from the Jurassic and Cretaceous of the Former Soviet Union and Mongolia,” Histor. Biol. 10(1), 197–245 (1995).
5. S. C. Bennett, “The Osteology and Functional Morphology of the Late Cretaceous Pterosaur Pteranodon: Part 1. General Description and Osteology,” Palaeontogr. Abt. A 260(1–6), 1–112 (2001).