More Fossils I found on my way to and from class during college in Starkville, Mississippi. This one is a material of which I found a LOT. This is maybe 50-60 mm in length? It piqued my interest there were so many sleek, shiny brown stones. There was also marcasite in this chalk bed. The Marcasite was a similar color when oxidized. Not sure if that helps with anything... This piece is actually filled with a softer material which breaks down like dried clay. I tried cleaning it out, but it was stubborn. Any ideas?