Honeycomb Coral

Favosites coral found in Louisville, Kentucky also known as honeycomb coral.  Found with Silurian Period fossils but this could be a Devonian Period fossil.

Horn Coral: Aulacophyllum

Aulacophyllum horn coral found in the Jeffersonville Limestone of Clark County, Indiana. The coral existed in the Devonian Period.

St. Clair Pennsylvania Fern Fossils

Pictures of fern fossils from St. Clair, Pennsylvania. These plants grew in the Late Carboniferous or Pennsylvanian Period and can be found in the Llewellyn Formation.  Fossils compliments of Shamalama.

St. Clair is famous for the white appearance of their plant fossils which caused by aluminum silicate or pyrophyllite. This first fossil is Alethopteris.

Modern fern image to use as comparison to fossil.