What is this?

Rww1987

Full Member
Jul 26, 2012
144
115
Iowa
Primary Interest:
All Treasure Hunting
What kind of fossil is this?
ImageUploadedByTreasureNet.com1430342391.446124.jpg
 

They look like internal shell casts, but also somewhat like bryozoan chuncks.
 

Thanks Inyo, that's exactly what they are. I never known what they were. They did come out of the same spot as crinoids stems.
 

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