Late Pliocene to Late Pleistocene; Recent.
Cuba to Virginia.
For information on the modern distribution of the species, see Malacolog and WoRMS.
Original Description (from Conrad, 1834, p. 133):
"Shell small, triangular, compressed, with about thirteen acute concentric prominent lines; anterior slope rectilinear, angular at the extremity; basal margin rounded; beaks central, apex acute; lunule much elongated. Length and height nearly equal, about one fourth of an inch.
Locality. Suffolk, Virginia."
To access this description in its original formatting through the Biodiversity Heritage Library, click here.