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=10092

Search the database pages:

Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Ptychobranchus subspatulatus

nominal species Unio subspatulata Meek & Hayden, 1857

Meek & Hayden, 1857, Proc. Acad. Nat. Sci. 9: 146.

= Ptychobranchus subspatulatus

Taxonomic Opinions

= Ptychobranchus subspatulatus (Meek & Hayden, 1857) — Modell, 1957
= Unio subspatulatus Meek & Hayden — Henderson, 1935

Page updated: 11:37:17 Mon 08 Sep 2025