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Found these while having a stroll on the beach on the southwestern tip of lake Michigan, in Illinois just south of the Wisconsin border. I am about as novice as you can get, and found this site while trying to figure out what these are... I'm pretty confident that the rings are crinoid stems, unsure about everything else. Hope the pictures are good enough, hard to photograph small things with a phone camera. Mostly curious about the spike shape on this one The smaller one here is the backside of the one above I don't know if these two are fossils, they look
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.
Cassandra Tiensivu posted a topic in Fossil IDSo many different ideas have been tossed out for this piece now. I thought perhaps some folks who aren’t in the Facebook group I regularly post in might have some clue to be able to narrow this down. The tan-colored half seems to be two layers of diagonal lines stacked on top of one another in a crisscross pattern, creating the holes in between. This is another Mississippian Coldwater Shale packstone from South Haven, MI.
Cassandra Tiensivu posted a topic in Fossil IDHello everyone. I’ve been chiseling apart some of my less than fabulous Mississippian Coldwater Shale packstones that I find in South Haven (MI) on Lake Michigan. Typically, I’ll discover various brachiopods, a few gastropods, various bryozoan, some ostracods, and little bits of flora that look like tiny seaweed. However, recently I opened up a packstone with a very different fossil inside. I have nothing else like it in my collection. A few folks I know have speculated the things I mentioned in the title of this post. The second picture is... I guess I would call it a ca