| Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio sandrii Locard, 1882
     Locard, 1882, Prodr. Malac. Franç. 1: 292.
 (misidentified reference to Unio sandrii Rossmässler, 1844)
 = Unio crassus Taxonomic Opinions
	+ Unio (Sandriana) sandriopsis Bourguignat — Locard, 1889
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