Volgadraco
| Volgadraco Temporal range: Late Cretaceous,
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|---|---|
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| Speculative reconstruction of Volgadraco as an azhdarchid | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Pterosauria |
| Suborder: | †Pterodactyloidea |
| Clade: | †Pteranodontia |
| Genus: | †Volgadraco Averianov et al., 2008[1] |
| Species: | †V. bogolubovi
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| Binomial name | |
| †Volgadraco bogolubovi Averianov et al., 2008[1]
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Volgadraco ("Volga River dragon") is a genus of pterodactyloid pterosaur from the Upper Cretaceous of European Russia. Volgadraco was originally classified as an azhdarchid. However, recent studies have concluded that it may belong to either the family Nyctosauridae,[2] or the family Pteranodontidae.[3]
Volgadraco is known from lower beak (holotype SGU, no. 46/104a) and postcranial fragments from the early Campanian-age Rybushka Formation of Saratov, Russia. The size of this animal, and the development of blood supply in the lower jaw are intermediate between older Santonian or Turonian azhdarchids like Azhdarcho and Bakonydraco and later Maastrichtian azhdarchids like Quetzalcoatlus. Volgadraco was described in 2008 by Averianov, Arkhangelsky, and Pervushov. The type species is V. bogolubovi, the specific name honouring Russian paleontologist Nikolai Nikolaevich Bogolubov. The authors consider the earlier named genus Bogolubovia to be a nomen dubium that in fact might be identical to Volgadraco;[1] their conclusions are refuted by a 2022 paper, which considers both Volgadraco and Bogolubovia to both be valid pteranodontids.[4]
Phylogeny
[edit]The cladogram below shows the phylogenetic analysis published by Nicholas Longrich and colleagues in 2018. While Volgadraco has been recovered as either an azhdarchid or pteranodontid in some analysis, Longrich and colleagues had recovered it within the family Nyctosauridae instead.[2]
See also
[edit]References
[edit]- ^ a b c Averianov, A.O.; Arkhangelsky, M.S.; Pervushov, E.M. (October 2008). "A New Late Cretaceous Azhdarchid (Pterosauria, Azhdarchidae) from the Volga Region". Paleontological Journal. 42 (6): 634–642. Bibcode:2008PalJ...42..634A. doi:10.1134/S0031030108060099. S2CID 129558986.
- ^ a b Longrich, Nicholas R.; Martill, David M.; Andres, Brian; Penny, David (2018). "Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary". PLOS Biology. 16 (3): e2001663. doi:10.1371/journal.pbio.2001663. PMC 5849296. PMID 29534059.
- ^ Averianov, A.O.; Arkhangelsky, M.S. (2021). "A large pteranodontid pterosaur from the Late Cretaceous of Eastern Europe". Geological Magazine. 158 (7): 1143–1155. Bibcode:2021GeoM..158.1143A. doi:10.1017/S0016756820001119. S2CID 229441587.
- ^ Averianov AO, Kurin AS (2022). "A new specimen of pteranodontid pterosaur Bogolubovia orientalis from the Upper Cretaceous of Penza Province, Russia". Historical Biology: An International Journal of Paleobiology. 35 (8): 1288–1296. doi:10.1080/08912963.2022.2087522. S2CID 249728681.
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