Late Pliocene to Early Pleistocene; extinct.
Southern Florida to North Carolina.
- Early Pleistocene
- Caloosahatchee Formation (S. FL)
- Late Pliocene
- Duplin Formation (SC, NC)
- Jackson Bluff Formation (N. FL)
- Raysor Formation (SC)
- Tamiami Formation (S. FL)
- Tamiami Formation (Murdock Station Member) (S. FL)
- Tamiami Formation (Ochopee Limestone) (S. FL)
- Tamiami Formation (Pinecrest Beds) (S. FL)