These pictures show an almost complete  Trimerus delphinocephalus (Green, 1832) trilobite. It was fossilized intact but was found in two...

Reading the Indiana Department Geology and Natural Resources Twenty-First Annual Report W.S. Blatchley State Geologist 1896, I came across ...

 Pyrite crystals found in the Waldron Shale of Clark County Indiana. It is from the Silurian Period.