Late Pliocene to Middle Pleistocene; Recent.
Panama to South Carolina.
For information on the modern distribution of the species, see Malacolog and WoRMS.
- Middle Pleistocene
- Bermont Formation (S. FL)
- Canepatch Formation (SC)
- Early Pleistocene
- Caloosahatchee Formation (S. FL)
- Urraca Formation (Mimitimbi Member) (Panama)
- Waccamaw Formation (SC)
- Late Pliocene
- Duplin / Raysor formations (GA)
- Jackson Bluff Formation (N. FL)