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Gastropod mollusks from the Hauterivian of Ulyanovsk (Volga Region): 1. Family aporrhaidae

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Abstract

Data on the detailed stratigraphic range of eight species of gastropod mollusks from the Upper Hauterivian of Ulyanovsk (Volga Region) are presented. A new genus, Trilemma, is established within the family Aporrhaidae. Two new species of this genus, T. russiense sp. nov. and T. striatocarinatum (Sinzow, 1880), are described.

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Original Russian Text © I.V. Blagovetshenskiy, I.A. Shumilkin, 2006, published in Paleontologicheskii Zhurnal, 2006, No. 1, pp. 33–42.

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Blagovetshenskiy, I.V., Shumilkin, I.A. Gastropod mollusks from the Hauterivian of Ulyanovsk (Volga Region): 1. Family aporrhaidae. Paleontol. J. 40, 34–45 (2006). https://doi.org/10.1134/S0031030106010047

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