This hemispherical bryozoan might be a Prasapora simulatrix found in the Kope Formation of Carroll County, Kentucky.  On one side of the...

Bryozoan fossil section found in the Kope Formation of Carroll County, Kentucky. These little moss creatures lived in the Ordovician Peri...

Not quite fossils or trilobites but these insects look like trilobites in some respects.  According to Wikipedia it is a " Duliticola ...