Help ID'ing fossil from Turkey Run State Park Indiana

[Lpetitt]

Hello everyone! I went to Turkey Run State Park in Indiana to do some geode hunting. We had some pretty decent luck, although we still have a lot to crack open. This was the edge of a shallow creek that was rocky with a little bit of sand/mud. I also found some interesting crinoids, much larger than I typically find at Lake Michigan or St. Leon. One of them even seems to be crystallized (I included a photo of this just because of think its pretty cool). I picked up one rock that I couldn't seem to identify. My guess is either a shell, coral, or bone. Any clues or identification would be appreciated since unknown fossils drive me crazy. Thanks and hopefully I'll get some photos of my Mazon Creek and St Leon trilos up soon.

[Rob Russell]

Hey there. 

 

The first may be be a piece of crinoid stem. The star shaped hole leads me to believe that. 

 

The second resembles segments of a straight shelled cephalopod. But I’m not positive that’s what it is. 

 

 

 

[FossilizedJello]

I have a piece that looks similar to this. I think you have a sandstone/limestone cluster, probably some crinoids and other marine calcium rich material.