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...

Today's posting is a super rare treat! The fossil shown here is a paratype of the blastoid Orbitremites kentuckiensis .  This fossil ...