| 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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 Bivalvia | Veneroida superfamily CYRENOIDEA Gray, 1840synonyms (4 nomina) | cladomics
 |  family CYRENIDAE Gray, 1840: 87 Recent species. synonymy (2 
             nomina) | 6 genera
 Distribution: East Asia, Australasia, Afrotropics, South America, North Eurasia, North America
 |  |  family CYRENOIDIDAE H. & A. Adams, 1857: 8 Recent species. synonymy (1 
             nomen) | 5 genera
 Distribution: South America, Central America, Afrotropics, North America, East Asia, Australasia
 |  | family GLAUCONOMIDAE Gray, 1853: fossil only.synonymy (1 
             nomen) | 2 genera
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