MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Mon 2 March 2026
Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio crassus
nominal species Unio courtillieri Hattemann, 1859
Unio courtillieri Hattemann, 1859 = Unio crassus
Hattemann, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 232.
Taxonomic Opinions
+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024: suppl. append. 2, p. 3.
= Unio c. courtillieri Hattemann, 1859 — Príe et al., 2021: 2934, Table 1.
= Unio cf. courtillieri — Lopes-Lima et al., 2021: 11.
= Unio crassus courtillierii [sic] Hattemann, 1859 — Araujo et al., 2018: [13].
+ Unio crassus — Anisimova et al., 2018: 10.
+ Unio crassus Phil. in Retzius, 1788 — Bogatov et al., 2018: 204.
+ Unio crassus batavus (Maton & Rackett, 1807) — Lopes-Lima et al., 2017: 578.
= Unio crassus cf. courtillieri Hattemann, 1859 — Klishko et al., 2017: 95.
= Unio crassus courtillieri — Lopes-Lima et al., 2017: 577, Table S1.
= Unio crassus courtillieri Hattemann, 1859 — Prié & Puillandre, 2014: [4], Table 1.
= Unio (Crassiana) crassus courtillieri Hatteman, 1859 — Falkner et al., 2002: 55.
= Unio (Crassiana) crassus courtillieri Hatteman, 1859 — Falkner et al., 2001: 67.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1969: 48.
+ Unio crassus batavus (Maton & Rackett, 1807) — Haas, 1940: 130.
+ Unio crassus var. piscinalis Ziegler — Germain, 1931: 724.
+ Unio (Fusculusiana) fusculus Ziegler in Rossmässler, 1836 — Germain, 1904: 256.
+ Unio (Fusculusiana) fusculus Ziegler — Locard, 1889: 132.
= Unio batavus var. courtilieri [sic] Hattmann [sic] — de Joannis, 1859: 285, pl. 9, fig. 3.
