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nominal species Unio kungurensis sylwensis Kobelt, 1912

Unio kungurensis sylwensis Kobelt, 1912 = Unio crassus

Kobelt, 1912. Icon. Land- und Süssw.-Moll. 18: 26, pl. 491, fig. 2625.
(intro'd as intra-sp. of Unio kungurensis Kobelt, 1912)

= Unio crassus

Taxonomic Opinions

+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024

+ Unio (Crassiana) crassus Retzius, 1788 — Vinarski & Kantor, 2016

+ Unio crassus gontieri Bourguignat, 1856 — Haas, 1969

+ Unio crassus gontieri Bourguignat, 1856 — Haas, 1940

+ Unio (s.s.) crassus var. chlebnikovi [sic] Kobelt, 1912 — Zhadin, 1938