Clark County Indiana Trilobite - Trimerus

Another view of the trilobite Trimerus delphinocephalus posted yesterday. It is from the Silurian period and was found in Clark County, Indiana (far southern part of state).

Silurian Trilobite - Trimerus delphinocephalus

My cousin has been working on a trilobite fossil found by a KYANA member in Clark County, Indiana on a field trip. It has now been sealed to help preserve the fragile shell after was cleaned with a sandblaster. This trilobite is called Trimerus delphinocephalus (Green, 1832) and lived in the Silurian Period. The matrix is from the Waldron Shale layer.

Click on image to see it larger.

Chain Coral Halysites Photographed in Sunlight

Chain coral Halysites from the Silurian Period. This one was found in central Jefferson County in the state of Kentucky in the United States.

The picture was taken in sunlight while an earlier post was photographed using incandescent light.