Paleogene rocks are widespread in Ukraine and are re presented by all three series of this system (Zosimovich & Shevchenko 2015 and references there).Paleogene sections are composed of different rocks: from deepwater flysch strata to extremely shallow marine and even continental sedimentary rocks (Zosimovich & Shevchenko 2015).A rich biota, including taxonomically diverse mollusk assemblages, is known from the Paleogene marine rocks (Sokolov 1894(Sokolov , 1905;;Korobkov 1962;Makarenko 1970;Amitrov 1993; Berezovsky 2016, etc.) as well as terrestrial (lacustrine) deposits ( Dykanet al. 2018) of Ukraine.Paleogene cephalopods in Ukraine are represented almost exclusively by nautilid species of the genera Eutre phoceras, Pseudocenoceras, Deltoidonautilus, Aturia and rhyncholites Rhyncolite danicus Shimansky & Alekseev,
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Dernov et al. (2023) studied this question.
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