| Page last updatedWed 1 October 2025
 | 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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 Updated Table 3: Richness of species and genera 
    arranged by taxonomy and regionThis page summarizes the current data on the richness 
    of freshwater mussel species and genera worldwide, as well as 
    in each biogeographical region. The table below updates Table 3 of Graf & Cummings 
    (2021). Numbers in parentheses indicate the richness of genera. 
    Region abbreviations: NA, North America; 
    CA, Central America; 
    SA, South America; 
    AF, Afrotropics; 
    EU, North Eurasia; 
    AS, East Asia; 
    AU, Australasia. For a more detailed summary of species richness and endemism 
    by geography, see Updated Table 4: 
    Species richness and subregional endemism by geography and family. |