Cyrtina Brachiopod

I believe this is a Devonian Period brachiopod called Cyrtina found in the Jeffersonville Limestone.  They were found in Jefferson County, Kentucky.

First for me, taking pictures of fossils in sand.  Makes me feel like I am at the beach!

Thanks to Herb for letting me take these pictures of these fossils he found.

 

 

Echinoid spines and plates

These pictures are of pieces of the echinoid Archaeocidaris from the Mississippian Period. They were found in the St. Benevieve Formation of Hardin County.

Thanks to Pam for the fossils.

This first picture shows two echinoid plates from an inside view.

Here is an overall view of the plates and spines of the echinoid with a metric ruler.

 

Spines of the echinoid, Archaeocidaris found in Kentucky.

 

Echinoid plates that spines were attached to.

 

Modiomorpha Clam Fossil

Some images of a Modiomorpha clam fossil found in the Mahantango Formation, Pennsylvania. This pelecypod existed in the Devonian Period. Great line detail in this casting. I have only found one of these in the Jeffersonville Limestone of Clark County, Indiana.

Thank you to Dave for providing the images for today's post.