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

Locard, 1889. Contr. Faune Malacol. Franc. 13: 138 [32], 195 [89].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 165.
Type(s): LECTOTYPE MNHN_22427 (by Graf, 2011: 494), Pentoise (Jura).
+ Unio nanus Lamarck, 1819 — Lopes-Lima et al., 2024: suppl. append. 2, p. 19.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969: 50.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 131.
= Unio (Groupe de l’U. locardianus) orbus Locard — Locard, 1893: 165.
= Unio orbus Locard, 1889 — Westerlund, 1890: 89.
= Unio (Locardiana) orbus Locard, Nov. sp. — Locard, 1889: 138.