Aulopora schoharie coral fossil of the Birdsong Formation found in Benton County, Tennessee.  It lived in the Lower Devonian Period.  Tha...

Dalmanites trilobite fossil pygidium of the Birdsong Formation found in Benton County, Tennessee.  This trilobite existed in the Lower Dev...

These pictures of maroon colored brachiopods are from the Middle Devonian Period Silver Creek Limestone of Clark County, Indiana.  I believ...