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ACKNOWLEDGMENTS
The study was carried out within the framework of program no. 17 of the fundamental research of the Presidium of the Russian Academy of Sciences “Evolution of the organic world. The role and influence of planetary processes” (subprogram 1. “Development of life and biosphere processes”), the project “Turnovers of the morphological and ecological structure of pelagic communities at the critical boundaries of the Phanerozoic,” the state budget theme of the Geological Faculty of the Moscow State University “Stratigraphic and paleontological characteristics of the Phanerozoic and Late Proterozoic deposits of Russia and adjacent territories.”
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Barskov, I.S. Morphological Diversity of the External Shell Sculpture of Paleozoic Cephalopods: How Did It Arise and What Does It Mean?. Paleontol. J. 52, 1741–1745 (2018). https://doi.org/10.1134/S003103011814006X
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DOI: https://doi.org/10.1134/S003103011814006X