Somewhere in my vast collection of stuff I have some crinoid stems. I too am in Indiana, and they show up everywhere. However, Petoskey stones[1] are cooler, i

Somewhere in my vast collection of stuff I have some crinoid stems. I too am in Indiana, and they show up everywhere. However, Petoskey stones[1] are cooler, in my opinion. [1] https://en.wikipedia.org/wiki/Petoskey_stone https://en.wikipedia.org/wiki/Petoskey_stone