This "bone" (sounds like fossil bone not modern) has a very distinctive grooved surface. It is 4 1/2" long, 3" high 1" thick. In the top groove my index finger fits perfectly. In what looks to me to be a joint surface (cup depression) my thumb conforms. I have found Cretaceous fossils-Exogyra and sea urchins. In previous years fossil shark teeth. The beach has been "renourished" I was told from 3 miles offshore. Very few shark teeth this year and they have been Miocene/Pliocene--great white, a small meg. Seen others with bull and sand tigers but no Cretaceous shark teeth. This bone has a very distinctive coloration--light brown/yellowish. I found 2 other fossils with this color. (Will post these later) Any ideas would be appreciated. Thanks