Silicified Devonian Horn Coral

Here is an unidentified horn coral that was found in a Devonian area. It sparkles quite a bit in the sun so maybe it is quartz or calcite. Found in Louisville, Kentucky.

Brachiopod Replaced with Quartz/Calcite

Here is some Devonian rock with a brachiopod cavity filled with quartz or calcite.

It was found in Louisville, Kentucky.

Cryptolithus Trilobite Fragments

Here are some Cryptolithus trilobite fragments from Carroll County, Kentucky.