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Richard
DSC05953.jpg 

These ammonites are from the Grey Shale (Toarcian) of Runswick Bay, Yorkshire. I am not familiar with this area but assume they are Harpoceras spp.? Any ID help would be much appreciated.
Richard
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Elbert
Hello, this is part of bed 32, the lowermost bit of the yetrock.
The ammonite is most likely Tiltoniceras antiquum.
Only if you find these together with Dactylioceras semicelatum is that the giveaway that`s it upper Grey shale.

greets, Bert
the search is as valuable as the finds...
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Richard
Thanks Bert.
So is that the Mulgrave Shale Member, Harpoceras falcifer zone? 
Richard
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Elbert
Hello, yes, I think so.
the search is as valuable as the finds...
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Gerald Gibson
Richard:

That is a very nice slab of ammonites.  It has tremendous display possibilities!

---- Gerald 
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Richard
Thanks Gerald.
The fossils appear to be  pyritic so what would be the best treatment prior to display. Would varnishing be sufficient / appropriate? 
Richard
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Gerald Gibson
Richard:

No!  Do not varnish the fossil, especially such a prize.  Polish the slab with a soft rag gently if you must.  Better yet, from what I've seen in the photograph, leave it alone!  Even museums are faithful to the natural conditions of such slabs.  What is acceptable is simply clearing away matrix that hides fossil beneath, but care should be taken not to damage the fossil as it sits in the slab.  This is the reason why collectors leave some specimens in situ and take a photograph instead of digging them out.  When in doubt, after experimenting with clearing a slab of matrix, leave it alone.  If you do want to clean it up a little, use the proper equipment.  I use dental tools, which I received from my dentist from his throw-aways.  However, most of my fossils came easily out of the rock and those which I have in my collection, for the most part, have been left alone.  Such treasures, as ammonites, trilobites, and sharks teeth, are not to be treated like jewelry; they are fossils--the result of hunting, barter, or purchase.

---- Gerald 
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