Late Pliocene to Middle Pleistocene; Recent.
Southern Florida to North Carolina.
For information on the modern distribution of the species, see Malacolog.
- Middle Pleistocene
- Bermont Formation (S. FL)
- Early Pleistocene
- Caloosahatchee Formation (S. FL)
- Waccamaw Formation (NC)
- Late Pliocene
- Duplin Formation (NC)
- Tamiami Formation (Pinecrest Beds) (S. FL)