One of the well known Devonian Period horn corals, the Heliophyllum sp. fossil is found in the Beechwood Limestone of Clark County, Indi...

The "Orthis" subnodosa brachiopod found in the Waldron Shale of Clark County, Indiana.  This is the only one I have found of t...

Two specimens shown both appear to be the inside of the shell.  Both are Waldron Shale fossils that appear to be Fardenia subplana .  Thi...