Late Pliocene to Early Pleistocene; Extinct.
Southern Florida to South Carolina.
- Early Pleistocene
- Caloosahatchee Formation (S. FL)
- Waccamaw Formation (SC)
- Late Pliocene
- Duplin / Raysor formations (GA)
- Jackson Bluff Formation (N. FL)
- Tamiami Formation (Lower) (S. FL)
- Tamiami Formation (Ochopee Limestone) (S. FL)
- Tamiami Formation (Pinecrest Beds) (S. FL)