St. Marys Formation (VA) (Age not resolved beyond "Miocene")
Early Miocene
Chipola Formation (N. FL)
Nuculana acuta from the Early Pleistocene Waccamaw Fm. of Brunswick County, North Carolina (PRI 70398).Nuculana acuta from the Early Pleistocene Waccamaw Fm. of Brunswick County, North Carolina (PRI 70436).