My son and I walked an area where they are leveling land near Lewisville Lake in Texas, this is supposed to be an area where they had found some of the oldest burn pits ever discovered in North America. Anyway the small cylindrical shaped piece has an outer edge made of a different material than the inner part which appears to have a celluose (not sure if right term) structure to it. And the other piece looks like a petrified peanut?