Don Barclay asked for information on the Texas Eocene. This is a good opportunity to publicize a great monograph by a gifted amateur: Garvie, Christopher L., 1996, The molluscan macrofauna of the Reklaw Formation, Marquez Member (Eocene: lower Claibornian), in Texas: Bulletins of American Paleontology, v. 111, no. 352, 177 pp., 23 pl. The publisher is: Paleontological Research Institution 1259 Trumansburg Road Ithaca, NY 14850 USA --and you can order copies directly from their Web site. Garvie's reference list includes many other works on the Eocene of Texas. The Reklaw is not the only unit that contains shell beds, and I think it is likely that your Leon County specimens come from a different Eocene unit. But Garvie's monograph is a good place to start. Another potential source of information is the Houston Paleontological Society, which publishes guidebooks to Texas fossil faunas. Does anyone have the address handy? Andrew K. Rindsberg Geological Survey of Alabama