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! 
The MUSSEL Project Database has moved to a new server, with a new URL! The new address for this page is: https://musselpdb.org/db.php?ty=nomsp&id=9784 
Search the database pages:
 
 
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 Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Sphaerium dybowskii nominal species Sphaerium westerlundi Dybowski, 1902
 
     Dybowski, 1902, Nachr. Bl. Dtsch. Malak. Ges. 34: 93.
    (homonym of Sphaerium (Corneola) westerlundi Westerlund, 1873; renamed Sphaerium dybowskii Lindholm, 1909)
 
= Sphaerium dybowskii Taxonomic Opinions
	+ Sphaerium (s.s.) dybowskii Lindholm, 1909 — Vinarski & Kantor, 2016 
	+ Sphaerium dybowskii Lindholm, 1909 — Kantor et al., 2010 
 
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