Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio castaneus Fitzinger, 1833
Fitzinger, 1833, Syst, Verz. Österr. Weichth.: 119.
(homonym of Unio castaneus Lea, 1831)
= Unio crassus Taxonomic Opinions
+ Unio crassus cytherea Küster, 1833 — Haas, 1969
+ Unio crassus cytherea Küster, 1833 — Haas, 1940
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