PaArtifactHunter wrote:
Why would a fossil like this be all the way up here in Wyoming County PA?
Well, it’s sufficiently water polished that you can’t assume it originated in the immediate vicinity of where you found it, but Pennsylvania has numerous suitable marine deposits were you will find fossil corals. In Wyoming County there are Pennsylvanian marine beds at Occana and middle Devonian marine deposits at Laceyville to name just two.
There are hundreds of different tabulate corals. They fossilise in different ways. Yours looks agatised or possibly calcited. That kind of preservation comes in every colour and pattern you can think of. I have no intention of trawling through my reference library to find you an exact match! If you want to believe it's something other than tabulate coral, be my guest but I won't respond any further on this thread.