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Data last updated
Mon 1 Dec 2025
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Bivalvia
| ... | Unionoidea
| Unionidae
| Unioninae
| Unionini
| Unio crassus
nominal species Unio pseudolitoralis Clessin, 1877
Unio pseudolitoralis Clessin, 1877 = Unio crassus
Clessin, 1875. Verh. Ver. Naturgesch. Hamburg 2: 258 [as ‘pseudo-litoralis’]. [nomen nudum]
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 469, text fig. 305 [as ‘pseudo-litoralis’].
= Unio crassus Taxonomic Opinions+ Unio crassus Philipsson in Retzius, 1788 — Lopes-Lima et al., 2024 + Unio (Crassiana) crassus Retzius, 1788 — Vinarski & Kantor, 2016 + Crassiana crassa crassa (Philippson in Retzius, 1788) — Kantor et al., 2010 + Crassiana crassa crassa (Philipsson in Retzius, 1788) — Kantor & Sysoev, 2005 + Batavusiana (Crassunio) crassa (Phillipsson, 1788) — Zatravkin, 1987 + Batavusiana (Crassunio) crassa (Philippson, 1788) — Stadnichenko, 1984 + Unio crassus crassus Retzius, 1788 — Haas, 1969 = Unio crassus var. pseudolitoralis Clessin, 1875 — Zhadin, 1965 + Unio crassus crassus Retzius, 1788 — Haas, 1940 = Unio (s.s.) crassus var. pseudolitoralis Clessin, 1875 — Zhadin, 1938 = Unio pseudolitoralis Clessin, 1875 — Westerlund, 1890 + Unio crassus var. maximus Kobelt, 1872 — Kobelt, 1884 = Unio batavus var. pseudo-litoralis Clessin — Clessin, 1877
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