Abstract
The earliest oyster-like bivalves of the genus Prospondylus Zimmermann are discovered in the Lower Permian (Upper Asselian–Sakmarian) of the South Cis-Urals. Previous confirmed findings were only known from the Lower-Middle Permian deposits of North America (Kungurian–Wordian) and the Upper Permian of Germany (Wuchiapingian). A new species Prospondylus shakhtauensis Biakov, sp. nov. is described.
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ACKNOWLEDGMENTS
The authors express their gratitude to the management of AO “Syr’yevaya Kompaniya” represented by Director General A.V. Shkurko for supporting and providing technical assistance during field work in the territory of the Shakhtau quarry. We are grateful to T.V. Kurazheva, curator of the F.N. Chernyshev TsNIGR Museum (St. Petersburg) for their help in working with Upper Paleozoic and Mesozoic bivalve collections. We also thank two anonymous reviewers whose comments and recommendations contributed to the improvement of the text of the manuscript and the elimination of some errors made in its original version.
Funding
This work was supported by the Russian Science Foundation, grant no. 22-24-00099 “Evolution of Mollusk Communities of the Early Permian Shakhtau Reef”.
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Biakov, A.S., Mazaev, A.V. The First Finds of the Most Ancient Oyster-Like Bivalves of the Genus Prospondylus Zimmermann (Pectinidae, Prospondylidae) in the Lower Permian of the Southern Cis-Urals (Russia). Paleontol. J. 57, 278–287 (2023). https://doi.org/10.1134/S0031030123030048
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DOI: https://doi.org/10.1134/S0031030123030048