With things slow in the fossils and history forum I will start posting some pics of things in my collection.
First is a crushed shell of Stenolobulites sinuosus from the Permian Meade Peak Member of the Phosphoria Formation. Also what was referred to Cornaptychus back in 1964, is it a Jaw Operculum or Bivalve?
According to the geologists, the Meade Peak Member is a very deep marine deposit. The ?bivalves, like all the ammonoids, are completely flattened, with little sign of breakage they were probably flat to start with. Still they look alot like the clams we used to find around here.