Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio ryckholti var. cuneata Malzine, 1867
Malzine, 1867, Essai faun. malac. Belg.: 32.
(homonym of Unio cuneatus Jacquemin, 1835; intro'd as intra-sp. of Unio ryckholtii Malzine, 1867)
= Unio crassus Taxonomic Opinions
+ Unio batavus Maton et Rackett — Germain, 1931
= Unio ryckholtii var. cuneatus De Malz. — Colbeau, 1868
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