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Showing results for tags 'spondylus'.
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I picked this little shell from the bottom of a tribolite fossil. It appears to have a layer of gold in or on it. It doesn't look like pyrite. But I'm no expert.... Any help would be great. Please excuse the photos...this speciman is very small. I took the pics on top of a penny.
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Shell preservation with holdfast. Anchored to a sponge.