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A New Dinosaur Fossil from the Southern Urals

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Abstract

A caudal vertebra of a dinosaur (Iguanodontia indet.) is described from Upper Cretaceous (lower Campanian) coastal marine deposits of Izhberda Quarry near Orsk (Orenburg oblast). The vertebra is characterized by a rectangular centrum in the lateral view and transverse processes located at the level of the neurocentral suture. This is the second record of a dinosaur in the region. The previously described dinosaur vertebra from Upper Cretaceous deposits near Orsk (Bogolyubov, 1912) was the first record of a dinosaur from Russia. The caudal vertebra from Izhberda Quarry belonged to a dinosaur about 5 m in length, which may indicate the absence of an island isolation effect in dinosaurs that inhabited the large islands of the Turgai Strait in the Late Cretaceous.

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Funding

This work was supported by the Russian Science Foundation (project no. 19-14-00020). A.O. Averianov’s research was carried out as part of a State Assignment of the Institute of Zoology, Russian Academy of Sciences (project no. AAAA-A19-119032590102-7). N.G. Zverkov’s research was supported by the Institute of Geological, Russian Academy of Sciences (State Assignment no. 0135-2019-0066).

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Authors and Affiliations

  1. Zoological Institute, Russian Academy of Sciences, 199034, St. Petersburg, Russia

    A. O. Averianov

  2. Borissiak Paleontological Institute, Russian Academy of Sciences, 117647, Moscow, Russia

    N. G. Zverkov

  3. Geological Institute, Russian Academy of Sciences, 119017, Moscow, Russia

    N. G. Zverkov

  4. Sopots’ko Young Geologists’ and Ecologists’ Club, Orsk, Russia

    A. V. Nikiforov

Authors
  1. A. O. Averianov
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  2. N. G. Zverkov
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  3. A. V. Nikiforov
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Correspondence to A. O. Averianov.

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Translated by D. Ponomarenko

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Averianov, A.O., Zverkov, N.G. & Nikiforov, A.V. A New Dinosaur Fossil from the Southern Urals. Dokl. Earth Sc. 498, 456–458 (2021). https://doi.org/10.1134/S1028334X21060040

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  • DOI: https://doi.org/10.1134/S1028334X21060040

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