Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio crassus

Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 133 [27], 192 [86].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 160.
Type(s): LECTOTYPE MNHN_22171 (by Graf, 2011: 467), La Marne, à Charenton (Seine).
+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024: suppl. append. 2, p. 7.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969: 50.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 131.
+ Unio crassus var. piscinalis Ziegler — Germain, 1931: 724.
= Unio (Groupe de l’U. fusculus) catalaunicus Coutagne — Locard, 1893: 160.
= Unio catalaunicus (Cout.) Locard, 1889 — Westerlund, 1890: 82.
= Unio (Fusculusiana) catalaunicus Coutagne, Nov. sp. — Locard, 1889: 133.