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Found this fossil Shell while working with limestone anybody Know What it is.
I think you have a Productus bivalve or a relative;
I would hazard a guess at Gigantoproductus giganteus.
The limestone you were 'working with' - where did it come from, in terms of original outcrop rather than stone supplier?
Thanks for the location info (message)
The limestone came from the Co Fermanagh, Donegal area Ireland is this a common fossil ?
Productus (several species) is well recorded from the carboniferous limestone of County Fermanagh, eg. in:
Yes, it is a fairly common fossil.
But if it is the first one you have found, then it is one-of-a-kind in your collection.