paleonet fish coprolites

["John VanRegenmorter" <johnneboi@xxxxxxxxxxx>]

My name is John, and I am an undergraduate in Michigan. I am doing a 
research project on fish/shark coprolites that I collected from the Michigan 
formation (Mississippian). However, I am having difficulties finding 
literature on identifying/ classifying the coprolites. If anyone has any 
referances that they think might be useful I would very much appreciate the 
information. Thanks in advance for your time!
John Van Regenmorter

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