Antiquatonia portlockiana

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

I was not quite sure about the genus of this small Brachiopod that was found today. It came from the soft punky layer on the top of the limestone. This layer is soft and typically wet. Through water interaction, it has made the typically hard limestone into a soft matrixRead 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 →