Air Scribe of a Brachiopod

Over the weekend I got a chance to use an air scribe for the first time. My intent was to clean a blastoid that was recently given to me. I will post my initial work on this soon. After realizing that it takes quite a bit of time to fully clean a fossil so I picked up this brachiopod to clean one side real fast.

This first picture is of the side of Ordovician brachiopod found east of Louisville, Kentucky that was not cleaned.

Here is the picture of the other side that has been cleaned.

A close up of part of the brachiopod. You can see the growth lines.

Different angle view of the cleaned brachiopod.

Brachiopod Paraspirifer bownockeri and Spinocyrtia

In addition to the New Albany Shale plants, brachiopods from Sylvania, Ohio (Lucas County) were brought in. These brachiopods have a really convex top shell that remind me of a shark fin. This one is called the Paraspirifer bownockeri found in the Silca Formation. It is from the Devonian period.

I think the red is pyritized part of the shell. Update: These last two pictures are of a brachiopod called Spinocyrtia.

Devonian Plants in the New Albany Shale

Here are some fossils given to me by a recent visitor to the Louisville area. He is known as the user Shamalama on thefossilforum.com website. If you have not had a chance you check out The Fossil Forum as an Internet source for fossil information.

I was not aware there were many fossils in the New Albany Shale layer and think of it as a time in the Middle Devonian period when the Louisville area was a dead water zone. It is thought that trees/plants drifted into this area from what is now Pennsylvania and New York.

I have found a number of papers on plants in the New Albany Shale layer when researching a question about the labeling of a plant fossil on the KYANA Geological Society website a while back.

The Structure and Classification of Four Plants From the New Albany Shale by J.H. Hoskins and A.T. Cross from American Midland Naturalist - November 1951. It says that four genera found in the black shales of the east central United States are: Callixylon, Asteroxylon, Protolepidodendron, and Reimannia.

Studies of New Albany Shale Plants. I. Stenokoleos Simplex Comb. by Charles B. Beck from American Journal of Botany - February 1960.

Studies of New Albany Shale. II. Callixylon Arnoldii by Charles B. Beck from Brittonia - October 15, 1962.

Studies of New Albany Shale. III. Chapelia Campbellii by Charles B. Beck from American Journal of Botany - September 1967.

Note splotches on some of the fossils is just water that has not yet evaporated after the rocks were cleaned. The pictures are of just two rocks each with fossil remains.