Hi, Conch-Lers, I have a small problem. I got some shells from Margarita Island, and I lost one of them. Yes, here in the house, which should tell you something about how organized I am. Maybe someone can give me the species name, so I can get another. It was a Cardium, flatter than many, with a yellowish margin around the edge; it was perhaps 2 and a half inches in circumferance. Does this ring a bell with anyone? I'm afraid this one might have made it into the trash and been thrown out. If I have the name, I can probably get one from a dealer. Thanks, Linda