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!

For each valid genus, the valid species are listed, Recent taxa first.

The MUSSEL Project Database is moving to a new server, with a new URL! The new address for this page will be: https://musselpdb.org/fmuotwaolcb/db.php?ty=validgen&id=139

Search the database pages:

Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini

genus Cyrtonaias Crosse & Fischer, 1894: valid species
     3 nominal genera as synonyms | Cladomics

Cyrtonaias explicata (Morelet, 1849) 6 synonyms | 30 specimens Range: Usumacinta River, Mexico and Guatemala. [Central America] Genbank sequences: 16S, 28S, COI. Other web sites: ITIS MolluscaBase 2.

Cyrtonaias sapperi (Ihering, 1901) 2 synonyms | 0 specimens Range: Guatemala. [Central America] Other web sites: ITIS MolluscaBase.

Cyrtonaias tampicoensis (Lea, 1838) 11 synonyms | 65 specimens Range: Southern Texas to Honduras. [Central America, North America] Genbank sequences: 16S, 28S, 5.8S, COI, COI M-type, COII, COII M-type, ITS1, ND1, SRA. Nature Serve: Freshwater Mussels G5. Other web sites: ITIS MolluscaBase 2.

Cyrtonaias umbrosa (Lea, 1856) 7 synonyms | 45 specimens Range: Vera Cruz, Mexico. [Central America] Other web sites: ITIS MolluscaBase 2.

Page updated: 09:53:15 Thu 24 Jul 2025