A new lithostrotian titanosaur (Dinosauria, Sauropoda) from the Early Cretaceous of Transbaikalia, Russia

  • Alexander Averianov Zoological Institute, Russian Academy of Sciences, Universitetskaya nab., 1, Saint Petersburg, 199034, Russian Federation; Department of Sedimentary Geology, Institute of Earth Sciences, Saint Petersburg State University, 16th Liniya V. O., 29, Saint Petersburg, 199178, Russian Federation http://orcid.org/0000-0001-5948-0799
  • Pavel Skutschas Department of Vertebrate Zoology, Saint Petersburg State University, Universitetskaya nab., 7–9, Saint Petersburg, 199034, Russian Federation http://orcid.org/0000-0001-8093-2905

Abstract

Tengrisaurus starkovi, gen. et sp. nov., is described based on three caudal vertebrae from the Lower Cretaceous (Barremian?) Murtoi Formation at Mogoito locality, near Gusinoe Lake in Buryatia, Russia. The new taxon is characterized by strongly procoelous anterior and middle caudal vertebrae, with strongly developed pre-epipophyses, highly pneumatic neural spine, and solid bone structure of the centrum. The reweighted phylogenetic analysis places the new taxon as a non-saltasaurid lithostrotian titanosaur (Sauropoda). This is one of the oldest fossil records of Lithostrotia and Titanosauria, which suggests a long and unexplored evolution of titanosaurs in the Early Cretaceous of Asia.

Keywords

Dinosauria, Sauropoda, Titanosauria, Lithostrotia, Early Cretaceous, Transbaikalia, Russia

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References

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Published
2017-04-01
How to Cite
AVERIANOV, Alexander; SKUTSCHAS, Pavel. A new lithostrotian titanosaur (Dinosauria, Sauropoda) from the Early Cretaceous of Transbaikalia, Russia. Biological Communications, [S.l.], v. 62, n. 1, p. 6–18, apr. 2017. ISSN 2542-2154. Available at: <https://biocomm.spbu.ru/article/view/4>. Date accessed: 16 aug. 2017. doi: https://doi.org/10.21638/11701/spbu03.2017.102.
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