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nominal species Unio mingrelicus var. stevenianiformis Zhadin, 1938

Unio mingrelicus var. stevenianiformis Zhadin, 1938 = Unio gontierii

Zhadin, 1938. Faune USSR Mollusques 4(1): 96, text fig. 28.
(intro'd as intra-sp. of Unio mingrelicus Drouët, 1881)

= Unio gontierii

Taxonomic Opinions

+ Unio gontierii Bourguignat, 1856 — Lopes-Lima et al., 2024

= Unio (Crassiana) stevenianiformis Zhadin, 1938 — Vinarski & Kantor, 2016

= Crassiana stevenianiformis (Rosén, 1925) [sic] — Kantor et al., 2010

+ Unio crassus gontieri Bourguignat, 1856 — Graf, 2007

= Batavusiana (s.s.) stevenianiformes [sic] (Shadin, 1938) — Zatravkin, 1987

= Batavusiana (s.s.) stevenianiformis (Shadin, 1938) — Zatravkin, 1983

+ Unio crassus gontieri Bourguignat, 1856 — Haas, 1969

+ Unio crassus gontieri Bourguignat, 1856 — Haas, 1940

= Unio (s.s.) mingrelicus var. stevenianiformis Zhadin, 1938 — Zhadin, 1938