Calcite is one of the most prevalent minerals found in the state of Indiana.  These first two pictures show clusters of honey colored cal...

The Scenophyllum conigerum? horn coral found in the Jeffersonville Limestone of Jefferson County, Kentucky.  This animal existed in the ...

The Heterophrentis cyathiformis horn coral found in the Jeffersonville Limestone of Jefferson County, Kentucky.  Fossil is from the Middl...