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Data last updated
Mon 1 Dec 2025
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Bivalvia
| ... | Unionoidea
| Unionidae
| Unioninae
| Unionini
| Unio crassus
nominal species Unio ryckholtii Malzine, 1867
= 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 + — Lea, 1870 = Unio ryckholtii De Malz. — Colbeau, 1868 = Unio ryckholtii Nobis — Malzine, 1867
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