The extinct cephalopod Metacoceras clinocostatum is a species commonly found in Brush Creek limestone. Compared to other examples of the genus Metacoceras, it is very small in size. I was apprehensive about identifying these. In the past, I believed they were the inner whorls of larger specimens. However, these are
Without a doubt, the genus Metacoceras is one of the two most common cephalopod genera found locally. This particular specimen preserves inner chambers. It did split in half while I was recovering it, but to my surprise, everything remained intact. Individual septal wall/suture lines can be seen on close inspection.
In writing the most recent research article, Aviculopinna, I set up an area to photograph specimens. While having this setup available, I went ahead and re-photographed the first seven specimens in the fossil catalog. Specimen CG-0001 John Harper identified this specimen as possibly being Orthotetes, a brachiopod. The preservation is
Update: Royal Mapes has helped me identify this as Schistoceras. After sketching the suture pattern, this was the best genus in my opinion, but I did not know based on the shell ornamentation and the size. Mapes confirmed my suspicion based on suture pattern, conch width and ornamentation. I have
I have several specimens of Metacoceras piling up as I work on prepping them for display or storage. In prepping, I typically remove additional matrix, and I remove matrix covering details of the specimens. The white marks are a result of using an air-scribe to remove matrix. This tool strikes
The local limestone stratigraphy gives paleontologists ample opportunity to find specimens from the class Cephalopoda. These layers are all exposed as part of the Glenshaw formation, the dominant formation within Parks Township. The specimens below represent a few of the many different cephalopods genus that are available. Found Cephalopod Genus