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After cracking open this packstone, I happened upon this odd little fossil. I did a bit more excavating to uncover the extra lobe. So far, the speculation is leaning heavily toward some sort of Actinocrinites plate. There are a few people pondering echinoderms. What are the general thoughts here on this piece? From South Haven, Michigan. Mississippian Coldwater Shale.
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Now, I have never seen one of these before. But… it feels like a crinoid piece of some sort. Only two of the rounded edges are visible, but I believe there are six sides to this. It reminds me of a connecting joint piece for a puzzle kit. Found it after cracking open this Coldwater Shale packstone from South Haven, Michigan.
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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.
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Hey everyone. I’m looking for more information on Goniatites found in the Mississippian Coldwater Shale. I found this little guy today after cracking open another packstone (second to last photo shows the host stone) I picked up in South Haven, Michigan, along the shores of Lake Michigan. Any insights you could toss my way would be greatly appreciated. Thanks so much for your time!
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