Morphologic data compiled
from: Moore, R. C., C. Lalicker, and A. Fischer. Invertebrate
Fossils. McGraw-Hill Book Company Inc., New York. 1952 Morris, Percy A.
A Field Guide to Shells of the Atlantic and Gulf Coasts and the West
Indies. Houghton Mifflin Company, Boston. 1975 Rehder, Harald A. The
Auburn Society Field Guide to North American Seashells. Alfred A. Knopf,
New York. 1981
Last updated on 29 July 2004 - has