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Gastropods of the Genus Sulcoactaeon Cossmann from the Barremian and Hauterivian of the Ulyanovsk Volga Region, Russia

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Abstract

Eight new species of the genus Sulcoactaeon are described from the Barremian and Hauterivian of the Ulyanovsk Volga region: S. gerassimovi sp. nov., S. fallax sp. nov., S. simbirskensis sp. nov., and S. kremenkensis sp. nov. from the Barremian, S. insuetus sp. nov., S. rotundus, sp. nov., S. polivnensis sp. nov., and S. shumilkini sp. nov. from the Hauterivian. Their geographical and stratigraphic distribution is discussed.

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ACKNOWLEDGMENTS

I am grateful to A.V. Guzhov (Borissiak Paleontological Institute, Russian Academy of Sciences) for help in making photographs on a scanning microscope and I.A. Shumilkin for donating several Sulcoactaeon shells for research.

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  1. Ulyanovsk State University, 432017, Ulyanovsk, Russia

    I. V. Blagovetshenskiy

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  1. I. V. Blagovetshenskiy
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Correspondence to I. V. Blagovetshenskiy.

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Translated by S. Nikolaeva

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Blagovetshenskiy, I.V. Gastropods of the Genus Sulcoactaeon Cossmann from the Barremian and Hauterivian of the Ulyanovsk Volga Region, Russia. Paleontol. J. 57, 146–160 (2023). https://doi.org/10.1134/S0031030123020053

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