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Data last updated
Thu 18 Dec 2025
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Bivalvia
| Sphaerioida
| Sphaerioidea
| Sphaeriidae
| Sphaeriinae
| Sphaerium problematicum
nominal species Sphaerium problematicum Gabriel, 1939
= Sphaerium problematicum Taxonomic Opinions= Musculium problematicum (Gabriel, 1939) — IUCN, 2011 = Sphaerium problematicum Gabriel, 1939 — Bogan, 2010 = Musculium (Sphaerinova) problematicum (Gabriel, 1939) — Korniushin, 2000 = Sphaerium (Sphaerinova) problematicum Gabriel, 1939 — B.J. Smith, 1992 = Sphaerium problematicum Gabriel — Kuiper, 1983
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