Ok, so all I got is that I'm waiting for it to say feed me Seymour. Whatever it is, I love it. I apologize for the penny for size, but it's in a large "boulder" (about 40 lbs, maybe the size of a large watermelon) of mother of pearl looking stuff and is hard to access. Has lots of neat little critters in lots of nooks and boreholes. Anyway, not sure if this is anything. Its convex, and spongy feeling, kind of like stiff crepe paper. Y'all seem to have a whole lotta knowledge, thanks for letting me tap it.