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Data last updated
Thu 1 January 2026
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Bivalvia
| ... | Unionoidea
| Unionidae
| Unioninae
| Unionini
| Unio crassus
nominal species Unio ater Drouët, 1857
Unio ater Drouët, 1857 = Unio crassus
‘Nilss.’ Drouët, 1857. Étud. Naïades. France, Unio: 72, pl. 4, fig. 1.
(reference to Unio ater Nilsson, 1822)
= Unio crassus Taxonomic Opinions+ Unio consentaneus (Ziegler) Rossmässler — Germain, 1931 + Unio ignari (Bgt.) Loc., 1889 — Westerlund, 1890 + Unio (Ateriana) ignari Bourguignat, Nov. sp. — Locard, 1889
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