Page last updated
Thu 3 September 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!

Bivalvia | Veneroida | Cyrenoidea | Cyrenoididae | Polymesoda

species Polymesoda mexicana (Broderip & Sowerby, 1829): specimens
     6 available nominal species synonyms (7 total synonyms)

Recent Taxonomic Opinions

Polymesoda mexicana — WoRMS (2012), OBIS (2012), Czaja et al. (2023)
Polymesoda aequilatera — Pereira et al. (2014)

Range

Brackish, Pacific coast of Mexico.

Map of Georeferenced Specimens

French Guiana

Syria