Pholidostrophia Brachiopod Fossil

This fossil appears to be a Pholidostrophia geniculata? brachiopod fossil. It was found in the Silica Shale of Sylvania, Ohio, USA. The fossil dates to the Middle Devonian Period.

Learn more at the Views of the Mahantango Internet blog.

Thanks to Vic for the fossil.

Rusophycus Trilobite Burrow

This picture shows a trace fossil or ichnofossil I have not found before. It is a trilobite burrow also referred to as a Rusophycus. It was found in the Kope Formation (Eden Group) of Carroll County, Kentucky, USA. The trace fossil dates to the Ordovician Period.

Maybe it was made by a Flexicalymene trilobite. The three main trilobite remains found in that area are Cryptolithus, Flexicalymene, and Isotelus. I originally picked up this rock because there was a branching bryozoan on the other side that was partially covered by matrix. I thought if it could be prepped out it would make a nice display specimen. Thanks to my cousin Kenny, he recognized the trace fossil on the back which was even cooler!

Homilodonta filistriata Clam Fossil

This picture shows what appears to be a Homilodonta filistriata clam or pelecypod fossil. It was found in the Kope Formation (Eden Group) of Carroll County, Kentucky, USA. It dates to the Ordovician Period. According to the fossilworks web site, it is also known as Ctenodonta filistriata and Deceptrix filistriata.

It is still in matrix and appears to have both valves.