The Mississippian Period brachiopod fossils Productus wortheni found in the Knobstone Formation of Clark County, Indiana, USA. What is n...

Here is a fossil I do not think I have seen before. The Mississippian Period brachiopod Syringothyrus texta found in the Knobstone Format...

Images of fenestrate bryozoan fossils found in Knobstone Formation of Clark County, Indiana USA. The fossil dates to the Mississippian Pe...