Late Pliocene to Early Pleistocene; Extinct.
Southern Florida to Virginia.
Original Description (from Conrad, 1832, p. 19):
"Ovate conical, with spiral striae, and minute spiral lines between; ribs or folds elevated, subacute, obsolete on the inferior half of the body whorl.
Locality. James River, near Smithfield, Va. Upper Tertiary."
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- Early Pleistocene
- Chowan River Formation (VA)
- Late Pliocene
- Duplin / Raysor formations (GA)
- Jackson Bluff Formation (N. FL)
- Tamiami Formation (Pinecrest Beds) (S. FL)
- Yorktown Formation (VA)