This fossil appears to be a Nereidavus invisibilis? scolecodont found in the Silurian Waldron Shale of Clark County, Indiana, USA.  The ...

A mold of the internal structure of what I think is a Sieberella roemeri? brachiopod.  Fossil found in the Silurian Waldron Shale of Cla...

It's National Fossil Day ™ in the United States.  There are no events planned in the area where I live.  Even so, I will try and fi...