Vjushkovisaurus
| Vjushkovisaurus Temporal range: Middle Triassic,
| |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Clade: | Archosauriformes |
| Genus: | †Vjushkovisaurus Ochev, 1982 |
| Type species | |
| †Vjushkovisaurus berdjanensis Ochev, 1982
| |
Vjushkovisaurus is an
postcranial skeleton which consists of 12 presacral vertebrae, left humerus, ribs, a fragment of the coracoid and a fragment of the fibula.[3]
Description
Most rauisuchids have a crest on the
acetabular process that overlies the head of the femur, allowing them to have a "pillar-erect" stance.[4][5] As an early rauisuchid Vjushkovisaurus lacks this crest, but it does have a small thickening on the surface of the ilium.[6] The humerus differs from other better known rauisuchids in that it is shorter and broader. However, it has been suggested that the only known humerus of Vjushkovisaurus may actually belong to an aetosaur.[7]
More recently, Nesbitt (2009) argued that Vjushkovisaurus represent most probably a valid non-
synapomorphy of Erythrosuchia in Parrish (1992) phylogenetic analysis.[3]
Paleobiology
Other vertebrates from the Berdyanka II locality that lived alongside Vjushkovisaurus include
top predator in its environment along other large carnivores including Dongusuchus and Erythrosuchus.[8]
References
- ^ Ochev, V.G. (1982). "Psevdosukhii iz Srednego Triasa Yuzhnogo Priural'ya". Paleontologicheskii Zhurnal. 1982: 96–102.
- ^ .
- ^ a b Sterling J. Nesbitt (2009). "The early evolution of archosaurs: Relationships and the origin of major clades". Columbia University (Open Access Dissertation): 1–632.
- .
- ^ Benton, M.J.; Clark, J. (1988). "Archosaur phylogeny and the relationships of the Crocodylia". In Benton, M.J. (ed.). The Phylogeny and Classification of the Tetrapods. 1. Amphibians, Reptiles, Birds (PDF). Systematics Association. Vol. 35A. Oxford: Clarendon Press. pp. 289–332. Archived from the original (PDF) on July 15, 2007.
- ^ Gower, D.J.; Sennikov, A.G. (2003). "Early archosaurs from Russia". In Benton, M.J.; Shishkin, M.A.; Unwin, D.M. (eds.). The Age of Dinosaurs in Russia and Mongolia. Cambridge: Cambridge University Press. pp. 140–159.
- ^ Juul, L. (1994). "The phylogeny of basal archosaurs". Palaeontologica Africana. 31: 1–38.
- .
External links
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