Page last updated
Mon 06 May 2024

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!

This page reports the specimens in the MUSSELpdb and provides a map if geocodes are known. The taxonomic history reports the record of different names and combinations that have been applied to this species (and its synonyms) since 2007.

Search the database pages:

Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina | Simpsonaias

species Simpsonaias ambigua (Say, 1825): specimens
     4 nominal species as synonyms

Taxonomic History (since 2007)

Simpsonaias ambiguaGraf & Cummings (2007), Watters et al. (2009), Cummings & Graf (2010), Bogan (2010), ..., FMCS (2021), Graf & Cummings (2021), Jeratthitikul et al. (2022), Hopper et al. (2023)
Simpsonais ambiguaWhelan et al. (2023)

Range: Wide but discontinuous distribution in the Interior and Great Lakes basins of eastern North America.

Map of Georeferenced Specimens
species map



Ohio R., Louisville, Ky


Genbank Vouchers


NCSM_30607 (COI, 28S) USA


Page updated: 09:06:21 Mon 06 May 2024

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