Palaeoneilo emarginata pelecypod from the Mahantango formation

Just a simple one picture post today. It's a Palaeoneilo emarginata pelecypod mold that I found in the Mahantango Formation (Devonian, Givetian stage) near Liverpool, PA.

There are some other shells on the same piece such as the Chonetes sp. just above the P. emarginata and possibly an Atyrpa sp. below it.