Need ID Help with Fossil /Rock Found in Carrickfergus Ireland

[SPiperato]

I'm not sure what the heck this is. It looks like the fossilized remnant of a Nautilus. There appears to be calcified bone mixed with very smooth glass like rock.

Oh... this was found on the bay shore near the castle.

 

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[wvwildman]

cool find

 

[SPiperato]

Thanks

 

[pannerman]

looks like limestone/dolomite with chert.

 

[gord]

If it is in limestone, some people would insist you call it flint.

 

[mamabear]

can't see anything that looks like a fossil. keep looking though & keep posting