It is difficult to find specimens of paleozoic cephalopod genus Domatoceras in local rocks. They can be found, but boththe genera Metacoceras and Pseudorthoceras dominate the cephalopod fauna. They are large cephalopods with a narrow venter. The younger whorls are only slightly or not impressed into the umbilical walls. BigRead More →

Ctenobactrites isogramma

Ctenobactrites is a genus of cephalopod under the order of Bactritida, an order rarely found in Western Pennsylvanian rocks. Ctenobactrites differs from Bactrites only by having a coarse transverse lirae (Mapes 1979). While I have found these intact, I have yet to find a suitable steinkern for collection. This specimenRead More →

Fossilized Paleozoic Ammonoids are a rare find in the Glenshaw Formation. When recovered, these specimens can be difficult to identify. I have recovered a few ammonoids, but as far as volume goes, the nautiloids rule the available fauna. I found my first ammonoid early, but I was unable to identifyRead More →

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 areRead More →

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 isRead More →