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

Locard, 1893. Coqu. Eau Douce Saumâtre France: 168.
Type(s): LECTOTYPE MNHN_22241 (by Graf, 2011: 477), La Loire à Nantes (Loire-Infereur).
+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024: suppl. append. 2, p. 9.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969: 51.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 131.
+ Unio batavus Maton et Rackett — Germain, 1931: 728.
= Unio (Batavusiana) gliscerus Locard, 1890 [sic] — Germain, 1904: 264, footnote.
= Unio (Groupe de l’U. batavus) gliscerus Locard, Nov. sp. — Locard, 1893: 168.