Pseudunio flabellatiformis (Grigorovich-Beresovskiy, 1915)

Taxonomy & Nomenclature

Synonyms: Unio flabellatiformis Grigorovich-Beresovskiy, 1915 (protonym); Margaritifera flabellatiformis (Grigorovich-Beresovskiy, 1915); Plicatibaphia flabellatiformis (Grigorovich-Beresovskiy, 1915); Margaritifera flabellata trajani "(Mikhaylovskiy, 1909)"; Unio trajani "Mikhaylovskiy, 1909"; Margaritifera (Pseudunio) moldavica Chepalyga, 1964; Pseudunio moldavica (Chepalyga, 1964); Margaritifera (Pseudunio) robusta robusta Chepalyga, 1964; Margaritifera (Pseudunio) robusta speensis Chepalyga, 1964; Margaritifera (Pseudunio) robusta tirassica Chepalyga, 1964

See Graf & Cummings (2025) for a more complete taxonomic history.

Conservation Status

Extinct (Lyubas et al., 2019; MolluscaBase eds., 2021, 2025)

Last record: Late Pleistocene (Lyubas et al., 2019)

Distribution

Moldova & Ukraine

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Grigorovich-Beresovskiy, N. A. (1915). Levantinskiya otlozheniya Bessarbii i Moldavii. Varshavskiya universitetskiya izvestiya 1915(2): 1-168.

Other references:

Bogachev, V. V. (1961a). Материалы по истории пресноводной фауны Евразии. 403 pp.

Bogachev, V. V. (1961b). Materialy k istorii presnovodnoi fauny Evrazii. Izdatel'stvo Akademii Nauk Ukrainskoi SSR, Kiev. 404 pp.

Bolotov, I. N., Vikhrev, I. V., Bespalaya, Y. V., Gofarov, M. Y., Kondakov, A. V., Konopleva, E. S., Bolotov, N. N. and Lyubas, A. A. (2016). Multi-locus fossil-calibrated phylogeny, biogeography and a subgeneric revision of the Margaritiferidae (Mollusca: Bivalvia: Unionoida). Molecular Phylogenetics and Evolution 103: 104-121.

Chepalyga, A. L. (1964a). Ob iskopayemkh Margaritifera Moldavii i yugo-zapada Ukrainy [Fossil Margaritifera of Moldavia and southwestern Ukraine]. Paleontologicheskiy Zhurnal. 1964(3): 35-46.

Chepalyga, A. L. (1964b). Cenozoic freshwater molluscs of the south of the Russian Plain and their stratigraphic importance. Proceedings of the Geological Institute of the USSR Academy of Sciences 166: 1-176.

Chepalyga, A. L. (1965). Fossil Margaritifera of Moldavia and southwestern Ukraine. International Geology Review 7(10): 1847-1857.

Chepalyga, A. L. (1967). Cenozoic freshwater molluscs of the south of the Russian Plain and their stratigraphic importance [in Russian]. Proceedings of the Geological Institute of the USSR Academy of Sciences 166: 1-176.

Graf, Daniel L. and Cummings, Kevin S. (2025). The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves). MUSSEL Project Web Site, https://www.mussel-project.net/. Accessed 24 June 2025.

Lyubas, A. A., Obada, T. F., Gofarov, M. Y., Kriauciunas, V. V., Vikhrev, I. V., Nicoara, I. N. and Bolotov, I. N. (2019). A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe. Ecologica Montenegrina 21: 1-16. https://doi.org/10.37828/em.2019.21.1

MolluscaBase eds. (2021). MolluscaBase. Pseudunio flabellatiformis (Grigorovich-Beresovskiy, 1915) †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1500769 on 2021-01-17

MolluscaBase eds. (2025). MolluscaBase. Pseudunio flabellatiformis (Grigorovich-Beresovskiy, 1915) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1500769 on 2025-06-22

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