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!

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Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus

nominal species Unio ryckholtii Malzine, 1867

Malzine, 1867, Essai faun. malac. Belg.: 32, pl. 2, figs. 1-2.

= Unio crassus

Taxonomic Opinions

+ Unio batavus Maton et Rackett — Germain, 1931
= Unio (Batavusiana) ryckholtii Malzine, 1867 — Germain, 1904
= Unio (Groupe de l’U. batavus) ryckholti Malzine — Locard, 1893
= Unio batavus var. ryckholtii Malzine, 1867 — Westerlund, 1890
= Unio (Ellipsopsisiana) ryckholtii Malzine — Locard, 1889
= Unio (Groupe de l’U. Batavus) ryckholti Malzine — Locard, 1882
- NO OPINION — Lea, 1870
= Unio ryckholtii De Malz. — Colbeau, 1868
= Unio ryckholtii Nobis — Malzine, 1867

Page updated: 08:24:18 Tue 01 Jul 2025