I bought some coprolites ( Mineralized dung) that came from Madagascar. I have some questions. What is the real age of them? Some sellers on the Internet say it's from the Eocene, others say it's from the pliocene. What animal did they come from? They were labeled as turtle coprolites. And last, Are they really coprolites? They could easily be concretions or some other geological thing. I have not been able to find much information.   Here's a pic