| Page last updated
Thu 17 July 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 | Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini genus Ptychobranchus Simpson, 1900: species
3 available nominal genus synonyms | cladomics  Ptychobranchus fasciolaris (Rafinesque, 1820)
syonymy (15 available, 17 total) | specimens (6 + 5 Genbank vouchers)
Range: Widespread in the Ohio, Great Lakes and Ozark basins, North America. (North America)
Genbank sequences: 16S, 28S, 5.8S, COI, COI M-type, COII, COII M-type, ITS1, ND1, other
IUCN Red List: Near Threatened A2ce
NatureServe: G4
other links: MolluscaBase
|  Ptychobranchus foremanianus (Lea, 1842)
syonymy (4 available, 7 total) | specimens (3)
Range: Alabama River, eastern Gulf Coastal Plain, USA. (North America)
NatureServe: G1
other links: MolluscaBase
|  Ptychobranchus greenii (Conrad, 1834)
syonymy (4 available, 5 total) | specimens (4)
Range: Tombigbee River, eastern Gulf Coastal Plain, USA. (North America)
Genbank sequences: 16S, ND1
IUCN Red List: Endangered B1ab(iii)
NatureServe: G1
other links: MolluscaBase
| Ptychobranchus jonesi (van der Schalie, 1934)
syonymy (1 available, 1 total) | specimens (0)
Range: Choctawhatchee and Escambia rivers, Florida and Alabama, eastern Gulf Coastal Plain, USA. (North America)
Genbank sequences: 16S, ND1
IUCN Red List: Critically Endangered A2ace
NatureServe: G1
other links: MolluscaBase |  Ptychobranchus occidentalis (Conrad, 1836)
syonymy (2 available, 2 total) | specimens (2)
Range: Ozark Plateau, USA. (North America)
Genbank sequences: 16S, ND1
IUCN Red List: Lower Risk/near threatened
NatureServe: G3
other links: MolluscaBase
|  Ptychobranchus subtentus (Say, 1825)
syonymy (2 available, 6 total) | specimens (0)
Range: Cumberland and Tennessee rivers, USA. (North America)
Genbank sequences: 16S, ND1
IUCN Red List: Lower Risk/near threatened (Ptychobranchus subtentum)
NatureServe: G2
other links: MolluscaBase
| Ptychobranchus langeckeri Modell, 1950 (fossil)
syonymy (1 available, 1 total) | specimens (0)
other links: MolluscaBase | Ptychobranchus subspatulatus (Meek & Hayden, 1857) (Cretaceous)
syonymy (1 available, 2 total) | specimens (0)
Range: Cretaceous, North America. |
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