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The First Find of Bactritoidea (Cephalopoda) in the Asselian–Sakmarian Beds of the Shakhtau Reef (Bashkortostan)

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Abstract—

This article briefly discusses the evolution of views on the taxonomic position of Bactritoidea within the class Cephalopoda. The history of establishment of the genus Ctenobactrites and its species is reviewed. The bactritoid studied is the first bactritoid to be found in the Asselian–Sakmarian interval of the Shakhtau Quarry and is identified as C. costatus Shimansky. It is noteworthy that this shell is larger than all known representatives of this subclass.

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ACKNOWLEDGMENTS

The author expresses his sincere gratitude to A.V. Mazaev, the organizer of the field work; A.G. Boev for the donation for the study of the shell of Ctenobactrites costatus; T.B. Leonova for valuable recommendations on the work, to the reviewers for comments and recommendations for correcting the paper, and to S.V. Nikolaeva for translating it into English.

Funding

This work was supported by the Russian Science Foundation grant no. 22-24-00099 “Evolution of Mollusk Communities in the Early Permian Reef Shakhtau.”

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

    A. Yu. Shchedukhin

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  1. A. Yu. Shchedukhin
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Correspondence to A. Yu. Shchedukhin.

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Translated by S. Nikolaeva

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Shchedukhin, A.Y. The First Find of Bactritoidea (Cephalopoda) in the Asselian–Sakmarian Beds of the Shakhtau Reef (Bashkortostan). Paleontol. J. 56, 496–502 (2022). https://doi.org/10.1134/S0031030122050112

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