Silurian Chain Coral - Halysites

A Halysites chain coral protruding from a rock from Louisville Limestone member. It was found in Jefferson County, Kentucky.

Devonian Corals

Here are some corals from the Devonian period found in Clark County, Indiana. These corals are probably Favositidae Emmonsia eximia

Isotelus Trilobite Fragment

Here is an fragment of an Isotelus trilobite from the Ordovician period. Notice all the fine line cracks in its shell. It was found in eastern Jefferson County, Kentucky.