>Hank Foglino has joined the 20th century. Got a modem and I think I'm on conch-l. Next step, I'm going to get a touch tone telephone. Does anyone have any references on "sea shells as part of the sedimentary record"? Thousands. Can you narrow the request somewhat? If you have access to a large city or university library, ask a Reference librarian if they have free access to GeoRef, GeoBase, or other computerized databases. If they charge per reference, then be careful what you ask for; the charges typically start at about USD 0.60 per reference, which can add up swiftly. Welcome to Conch-L. Andrew K. Rindsberg Geological Survey of Alabama