Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio nanus
‘Held’ Kobelt, 1879. Icon. Land- und Süssw.-Moll. 6: 44, pl. 163, fig. 1649.
(homonym of Unio phaseolus Hildreth, 1828)
+ Unio nanus Lamarck, 1819 — Lopes-Lima et al., 2024: suppl. append. 2, p. 17.
+ Unio (Crassiana) crassus Retzius, 1788 — Vinarski & Kantor, 2016: 25.
+ Unio crassus cytherea Küster, 1833 — Haas, 1969: 46.
+ Unio crassus cytherea Küster, 1833 — Haas, 1940: 130.
+ — Simpson, 1914.
+ Unio heldii Küster — Kobelt & Haas, 1910: 25.
= Unio (sec. Hyridella) batavus vr. phaseolus Held in Kobelt, 1879 — Paetel, 1890: 145.
+ Unio heldii Küster, 1848 — Westerlund, 1890: 80.
+ Unio heldii Küst. — Drouët, 1881: 13.
= Unio phaseolus Held — Kobelt, 1879: 44, pl. 163, fig. 1649.
+ Unio batavus var. crassus Retz. — Clessin, 1877: 468.
+ Unio heldii Küster — Küster, 1854: 111.