Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio crassus
‘Ray’ Locard, 1882. Prodr. Malac. Franç. 1: 290 [as ‘Unio minutus’]. [nomen nudum]
‘Ray’ Servain, 1888. Bull. Soc. Malac. France 5: 316.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 130.
+ Unio mancus var. amnicus Ziegler — Germain, 1931: 726.
= Unio (Groupe de l’U. amnicus) minutulus Ray — Locard, 1893: 164.
= Unio minutulus (Ray) Servain, 1888 — Westerlund, 1890: 90.
= Unio (Amnicusiana) minutulus Ray — Locard, 1889: 137.
= Unio (Amniciana) minutulus Ray — Servain, 1888: 316.