Browse the MUSSELp Database!
The Freshwater Mussels (Unionoida) of the World
(and other less consequential bivalves)

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The searching function is handled by a Google Custom Search Engine.

The June 2025 Mussel of the Month is Lasmigona costata. Lasmigona (Unionidae) is a genus of three species, widespread in eastern North America.

This post will delve into the implicit debate over the classification of Lasmigona and how the data available on the MUSSEL Project web site can be used to resolve it.

The MUSSEL Project Database Dashboard

The MUSSELpdb-db is a quick summary of the current state of freshwater mussel species & genus richness, according to the MUSSEL Project Database (the MUSSELpdb).