Cassandra Tiensivu Posted May 17, 2021 Share Posted May 17, 2021 (edited) Does anyone have any ideas as to what makes this sort of pattern? The opposite side was just a plain, smooth clay deposit. Found this Coldwater Shale piece in South Haven, Michigan, along the shores of Lake Michigan. I did have someone suggest Fenestate bryozoan. When I tried looking it up though, I found a ton of variants. Edited May 17, 2021 by Cassandra Tiensivu Link to comment Share on other sites More sharing options...
Rockwood Posted May 17, 2021 Share Posted May 17, 2021 The two dimensional look does suggest fenestrate, but the organization of the pattern looks more tabulate coral to me. I think the colony was preserved as barely more than a two dimensional mold of it's surface. 1 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 18, 2021 Share Posted May 18, 2021 It's a nice specimen. In my opinion it is a fenetrate bryozoan, but not actually Fenestella. The group was pretty varied I don't know the species in this formation, but I think it could be one of them. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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