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Showing results for tags 'stromatollite'.
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Looking for ID help. This potential fossil was found on a dry lake bed in Southwest WI. In the same area this was found, I found other "classic" limestone Ordovician stromatolites exhibiting typical lateral columnar stratification in side view with convex tops and concave bottoms. This fossil has much the of the same structures but is partially "agatized". Could it be a stromatolite? All ID feedback will be appreciated.