Good evening folks. I have a Cephalopod section that weighs about 5 pounds and is about 7 inches long without a name:-( It was collected from leftover bridge fill on the Oregon/Washington border. No other information was available. It's unusual (to me) in two ways, first the size and center crystallization and second it appears to have green/brown contents visible where a piece was broken off (right side of photo #1). Help....