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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 occidentalis Locard, 1889
 Unio occidentalis Locard, 1889 = Unio crassus
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43], 220 [114]. ‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 180. ‘Bourguignat’ Locard, 1899. Conchyliol. Portug.: 220. (homonym of Unio occidentalis Conrad, 1836) Type(s): LECTOTYPE MNHN_22424 (by Graf, 2011: 494), Balbigny (Loire).
= Unio crassus Taxonomic Opinions+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024 + Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969 + Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940 + Unio consentaneus (Ziegler) Rossmässler — Germain, 1931 + — Simpson, 1914 = Unio (groupe de l’U. ater) occidentalis Bourguignat in Locard, 1889 — Locard, 1899 = Unio (Groupe de l’U. ater) occidentalis Bourguignat — Locard, 1893 = Unio occidentalis (Bgt.) Loc., 1889 — Westerlund, 1890 = Unio (Ateriana) occidentalis Bourguignat, Nov. sp. — Locard, 1889
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