Devonian Pelecypod or Clam

Here is a clam I found at Speed Quarry, Indiana back in April. Until a few days ago I did not know its scientific name until I came across an Indiana Geological Annual Report for 1900. It had a section on Devonian fossils and this was pictured on one of the plates.

This clam or pelecypod is called Paracyclas lirata.

I will update this section later with a image with a scale to show how big this clam was. Also I believe I have found 2-3 of these species.

Another thing I recently learned is that the Jeffersonville limestone layer found here locally is very similar to the Columbus limestone layer found in Ohio. Since we have to refer to Ohio fossil bulletins from the State of Ohio Department of Natural Resources Division of Geological Survey it is good to know. Referring to their Bulletin 54 from 1955, they comment that the genus Paracyclas could be called "round clam". It also refers to a species of clam called Paracyclas elliptica that occurs in Columbus, Deleware, and Prout layers.

Crinoid Calyx Fragment

Here is the bottom of a crinoid calyx or head.

It is from Joe Prather Highway which is a location about an hour south of Louisville, Kentucky on I-65.

I am not sure of the species or time period. Will continue to research and post later.

Crinoid Cluster

Here is a cluster of crinoid stems from Kentucky Highway 313 or Joe Prather Highway from I-65 to Fort Knox. I am not sure what species it is or the time period for these fossils.

This site is less than an hours drive from Louisville south on I-65.