The distinctive ribbed coiled ammonite is known as the Mortoniceras sp. found in Tarrant County, Texas. It was found in Duck Creek Formati...

This entry shows a number of Ordovician Period bryozoan holdfasts. They were found in Franklin County, Kentucky in the Lexington Limestone....

This trilobite is from Lucas County, Ohio. This trilobite is probably my favorite because it is the one I find the most in the Louisville, ...