I have never found a living chamber on a cephalopod fossil before. This one is just the very edge of the mold but it can be seen how the sh...

Here is a colonial coral that might be a Foerstephyllum vacuum  ( Foerste , 1909)  but it would need to be thin sectioned to really know. I...

Here is a close up some colonial coral from the Ordovician period. It was found in Jefferson County, Kentucky near Jeffersontown. It appea...