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Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus

nominal species Unio ater Nilsson, 1822

= Unio crassus

Taxonomic Opinions

+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024

+ Unio (Crassiana) crassus Retzius, 1788 — Vinarski & Kantor, 2016

+ Batavusiana (s.s.) musiva (Spengler, 1793) — Zatravkin, 1987

+ Unio crassus crassus Retzius, 1788 — Haas, 1969

+ Unio crassus crassus Retzius, 1788 — Haas, 1940

= Unio (s.s.) ater Nilsson, 1822 — Zhadin, 1938

+ Unio (sec. Lymnium) batavus (Maton & Rackett, 1807) — Simpson, 1914

+ Unio (sec. Lymnium) batavus (Maton & Rackett, 1807) — Simpson, 1900

= Unio (Groupe de l’U. ater) ater Nilsson — Locard, 1893

= Unio ater Nilsson, 1822 — Paetel, 1890

= Unio ater Nilss., 1822 — Westerlund, 1890

= Unio (Ateriana) ater Nilsson — Locard, 1889

= Unio (Groupe de l’U. ater) ater Nilsson — Locard, 1882

= Unio ater Nilss. — Drouët, 1881

= Unio batavus var. ater Nilsson — Clessin, 1877

+ Margaron (Unio) batavus (Mat. & Ract.) — Lea, 1870

= Unio crassus var. ater Nilss. — Westerlund, 1867

+ — Reeve, 1865

+ Unio (Mysca) tumidus limicola — Mörch, 1863

= Unio (Lymnium) ater — Drouët, 1857

= Unio (Lymnium) ater Nilss. — Moquin-Tandon, 1855

= Unio ater Nilsson — Küster, 1854

+ Margaron (Margaritana) margaritifera (Lin.) — Lea, 1852

= Unio ater var. ? — Rossmässler, 1838

+ Margarita (Unio) batava Lam. Pfeif. Flem. — Lea, 1838

= Unio atra Nils. — Krynicki, 1837

+ Margarita (Unio) batava Lam. — Lea, 1836

= Unio ater Nilss. — Rossmässler, 1835

+ Unio lemovicincae Fér. — Menke, 1830

+ Unio lemovicincae Fér. — Menke, 1828

= Unio ater — Nilsson, 1822