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!

The MUSSEL Project Database has moved to a new server, with a new URL! The new address for this page is: https://musselpdb.org/db.php?ty=nomsp&id=5828

Search the database pages:

Unionoida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus declivis

nominal species Elliptio tetralasmus manubius Frierson, 1927

‘Gould’ Frierson, 1927, Check List N. Amer. Naiades: 34.
(misidentified reference to Unio manubius Gould, 1855)

= Uniomerus declivis

Taxonomic Opinions

+ Uniomerus declivis (Say, 1831) — Howells et al., 1996

Page updated: 11:52:14 Mon 08 Sep 2025