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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 crassissimus Hanley, 1843
Unio crassissimus Hanley, 1843 = Unio crassus
Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 33 [as ‘Mysca tumida var. crassissima’]. [nomen nudum]
 ‘Fer.’ Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 209.
= Unio crassus Taxonomic Opinions+ Margaritana crassa (Retzius, 1788) — Simpson, 1914 + Margaritana crassa (Retzius, 1788) — Simpson, 1900 + Margaron (Unio) crassus (Retz.) — Lea, 1870 = Unio crassissimus Fer. — Hanley, 1843 = Mysca tumida var. crassissima m. — Schlüter, 1838
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