Abstract
New belemnite species of the family Cylindroteuthididae are described from the Ryazanian and Valanginian sediments of the Nordvik Peninsula, namely Arctoteuthis angusta sp. nov. and Boreioteuthis mirifica sp. nov. The species Lagonibelus necopinus (Gustomesov, 1960), which was previously known only from the North Urals, was recognized for the first time in East Siberia, and the study of ontogenetic changes in the rostra of this species allowed substantiation of its subfamily and generic affiliation.
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ACKNOWLEDGMENTS
The author is grateful to O.S. Dzyuba (IPGG SB RAS, Novosibirsk) and A.P. Ippolitov (Geological Institute, Russian Academy of Sciences, Moscow) for critical revision of the manuscript and valuable remarks, and A.S. Alifirov (IPGG SB RAS, Novosibirsk) and V.A. Marinov (OOO Tyumen Petroleum Research Center, Tyumen) for information from field diaries.
Funding
This work was supported by the project of the Fundamental Scientific Research no. 0331-2019-0004 and is a contribution to the IGCP project 679.
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Translated by I. Melekestseva
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Efremenko, V.D. New Belemnites of the Family Cylindroteuthididae from the Lower Cretaceous of Northern East Siberia, Nordvik Peninsula. Paleontol. J. 56, 37–46 (2022). https://doi.org/10.1134/S003103012201004X
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DOI: https://doi.org/10.1134/S003103012201004X