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 | ... | Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina | Pressodonta

species Pressodonta viridis (Rafinesque, 1820): specimens
     10 available nominal species synonyms (14 total synonyms)

Recent Taxonomic Opinions

Alasmidonta (Pressodonta) viridis — Graf & Cummings (2007)
Alasmidonta viridis — Tiemann et al. (2007), Williams et al. (2008), Watters et al. (2009), Bogan (2010), Cummings & Graf (2010), ... Graf & Cummings (2021), FMCS (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025)
Alasmidonta calceolus — ITIS (2012)
Alasmidonta minor — ITIS (2012)
Pressodonta viridis — FMCS (2025)

Range

Upper Mississippi, Ohio and Great Lakes basins, USA and Canada.

Map of Georeferenced Specimens

USA