Pictures of two marble size cystoids (Rhombifera) of the Waldron Shale (Niagara Limestone) of Clark County, Indiana.  These cystoids are ca...

This brachiopod seems to match one shown on the Indiana State Museum collection database website that is identified as Cf. Alispirifer imb...

Heliophyllum sp. horn coral found in the Beechwood Member of the North Vernon Limestone of Clark County, Indiana.  This coral existed in t...