Page last updated
Mon 13 Mar 2023

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 | Arcidens

species Arcidens confragosus (Say, 1829): specimens
     2 nominal species as synonyms

Taxonomic History (since 2007)

Arcidens (s.s.) confragosusGraf & Cummings (2007)
Arcidens confragosusTiemann et al. (2007), Williams et al. (2008), Watters et al. (2009), Cummings & Graf (2010), ..., Pieri et al. (2018), Inoue et al. (2020), Graf & Cummings (2021), FMCS (2021)
Arcidens confragosaInoue et al. (2014)
A. confragosusMarshall et al. (2018)

Range: Widespread in Interior Basin and from Texas to Alabama in rivers draining to the Gulf of Mexico, USA.



Mississippi River, West shore at Red Wing, Minn. [40 mi SE Saint Paul, Minn.; R14W, T113N; Goodhue Co., Minn.]


Page updated: 09:31:35 Mon 13 Mar 2023

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