| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Ptychobranchus fasciolaris (Rafinesque, 1820) |
Kidneyshell | North America | |
| Ptychobranchus jonesi (van der Schalie, 1934) |
Southern kidneyshell | East Pacific | |
| Ptychobranchus occidentalis (Conrad, 1836) |
Ouachita kidneyshell | North America | |
| Ptychobranchus subtentum (Say, 1825) |
Fluted kidneyshell | East Pacific |