Help will be greatly appreciated in understanding this bone that I found. It looked like a large piece of turtle shell when I found it. Like most at this site it is poorly preserved and broke in to several pieces as I went to pick it up. I thought it was turtle plastron (common in the area) until I washed it and saw significant texture. Now I dont know what it is at all. Too much texture for turtle, too little for croc. Any help to identify what it is, (or even what it isnt) will be well received.