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 | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Medionidus

species Medionidus simpsonianus Walker, 1905: specimens
     1 available nominal species synonym

Recent Taxonomic Opinions

Medionidus simpsonianus — Graf & Cummings (2007), Anonymous (2008), Bogan (2010), Cummings & Graf (2010), Williams et al. (2011), ... Williams et al. (2017), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025)

Range

Endemic to the Ochlockonee Basin, eastern Gulf Coastal Plain, Florida and Georgia.

Map of Georeferenced Specimens

USA