| The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win! 
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 Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Sphaerium occidentale nominal species Cyclas occidentale Lewis, 1856 ‘Prime’ Lewis, 1856. Proc. Boston Soc. Nat. Hist. 6(1): 2.
  Prime, 1865. Smithsonian Misc. Coll. (145): 41, fig. 34. ‘Prime’ Lewis, 1872. Proc. Acad. Nat. Sci. 24: 109.
= Sphaerium occidentale Taxonomic Opinions= Sphaerium (Herringtonium) occidentale (Lewis, 1856) — Bespalaya et al., 2023 = Sphaerium occidentale  — Saito et al., 2022 = Sphaerium occidentale  — Bespalaya et al., 2022 = Sphaerium occidentale  — Bespalaya et al., 2017 = Sphaerium (Herringtonium) occidentale  — Fuentealba-Jara et al., 2017 = Sphaerium occidentale  — Clewing et al., 2013 = Sphaerium occidentale (J. Lewis, 1856) — ITIS, 2012 = Sphaerium occidentale  — Stunžėnas et al., 2011 = Sphaerium occidentale Lewis, 1856 — Bogan, 2010 = Sphaerium occidentale  — Schultheiß et al., 2008 = Sphaerium occidentale  — Mackie, 2007 = Sphaerium (Herringtonium) occidentale (Prime) — Lee & Ó Foighil, 2003 = Sphaerium (Herringtonium) occidentale (Prime, 1860) — Korniushin & Glaubrecht, 2002 = Sphaerium occidentale (Lewis, 1856) — Lee & Ó Foighil, 2002 = Sphaerium (Herringtonium) occidentale (Lewis, 1856) — Cooley & Ó Foighil, 2000 = Sphaerium occidentale (J. Lewis, 1856) — Turgeon et al., 1998 = Sphaerium occidentale (Prime) — Mackie et al., 1980 = Sphaerium (Herringtonium) occidentale (“Prime” Lewis, 1856) — Burch, 1975 = Sphaerium (Herringtonium) occidentale (Prime in Lewis, 1856) — Clarke, 1973 = Sphaerium occidentale Prime, 1860 — Herrington, 1962 = Sphærium occidentale Prime — Prime, 1895 = Sphærium occidentale Prime — Lewis, 1872 = Sphærium occidentale Prime — Prime, 1870 = Sphærium occidentale Prime — Prime, 1865 |