A Silurian Dawsonoceras annulatum

Here is a Silurian period cephalopod classified as Dawsonoceras annulatum. 


It looks like a small part of its shell is left (the pinkish looking rock with the sine wave shapes in it). The rest of the fossil is just an imprint on a rock.

I found this specimen at KYANA fossil study and always like find this cephalopod fossil. More to come.

Dalmanites limuluris Trilobite

Here is a picture of a Dalmanites limulurus trilobite from the Silurian period. It was embedded in Rochester shale.

The image was taken at a dealer tent at the Falls of the Ohio State Park located in Clarksville, Indiana during the Fossil Festival.

Flexicalymene retrorsa Trilobite

Here is a Flexicalymene retrorsa trilobite from the Upper Ordovician period.

This picture was taken at a dealer tent at the Fossil Festival located at the Falls of the Ohio State Park in Clarksville, Indiana.