Trilobite Trimerus Side View

The side view of a Trimerus delphinocephalus found in Clark County, Indiana in the Waldron Shale layer. The creature lived in the Silurian Period. Two more images of this animal can be found in the Fossils of Ohio book on page 108, figures 10 and 11.

Back Side of Trimerus Trilobite

Here is the back thorax of a Trimerus type trilobite from the Silurian period. It is described in more detail on page 98 of the Fossils of Ohio book. According to that description, these trilobites could get to 20 cm in length. This one about 4-6 cm wide. The creature had small eyes about about 13 segments for the thorax.

Ordovician Bryozoan

Here is a Ordovician bryozoan found in the Kope Formation in Carroll County, Kentucky. It has linear tubes attached, three are showing in the picture.