Antiquatonia portlockiana

Norwood and Pratten first described Antiquatonia portlockiana in 1855 as Producti portlockianus. In 1976, the species was rearranged as Antiquatonia portlockiana by Douglas C. Brew and Stanley S. Beus. Specimens of Antiquatonia Portlockiana from Armstrong County Brachiopods have been a less-than-common find at the Pine Creek locality. Gastropods, Cephalopods, andRead More →

Eomarginifera longispinus brachial valve underside

Yet again, I need to reverse the identification of the specimens below. I will be altering the article, but the specimen referenced found in the Brush Creek limestone is not E. longispinus, but Kozlowskia splendens. L. longispinus is found in the late Mississippian of European and U.K. rocks. Eomarginifera longispinusRead More →

Kozlowskia splendens is a species of brachiopod described in the Brachiopods of Ohio book. The species is reported from the Brush Creek limestone. I originally wrote this post about specimen CG-0008, but it turned out to be Eomarginifera longispinus. The difference? The so-called ears of the shell. This is theRead More →

Pulchratia is a genus of brachiopod known from the Late Carboniferous through the end of the Permian. After doing some visual research with local fossil plates, I settled on the genus Pulchratia. I considered Juresania, which is a sister genus within the Echinoconchidae family, but Pulchratia fit better. This isRead More →

Top view of Neospirifer

I have seen a few specimens of Neospirifer locally, however none this large and in as good as shape. I have settled on this being the genus Neospirifer (Fredricks 1919), or at least something from the Spiriferidae family. The prominent groove down the middle of the shell with two raisedRead More →

The Brachiopod genus Composita was existent from 376 to 252 million years ago. Like a large majority of the genera that I collect, the Permian-Triassic Extinction event caused them to go extinct. This specimen was collected in April of 2019 was identified early on by J. Harper, a trusted expertRead More →