WI-fossil-guy Posted July 15, 2019 Share Posted July 15, 2019 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. Link to comment Share on other sites More sharing options...
Sberebit Posted July 16, 2019 Share Posted July 16, 2019 I dunno, but that is a nice find! Link to comment Share on other sites More sharing options...
Rockwood Posted July 16, 2019 Share Posted July 16, 2019 Can you give us a larger file of the second photo up from the bottom ? Link to comment Share on other sites More sharing options...
WI-fossil-guy Posted July 16, 2019 Author Share Posted July 16, 2019 Rockwood: Thanks for your interest. I think I greatly enlarged the file size of the last two posted photos. Looking forward to your feedback. Link to comment Share on other sites More sharing options...
abyssunder Posted July 16, 2019 Share Posted July 16, 2019 maybe agatized coral / bryozoan? " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Rockwood Posted July 17, 2019 Share Posted July 17, 2019 The fact that some of the lumps appear to have cylinder shaped centers of a different material would seem to contraindicate the stromatolite idea. I still can't make out any other diagnostic though. It may have to stop at agate minus the ized. Link to comment Share on other sites More sharing options...
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