Lucid_Bot Posted November 4, 2022 Share Posted November 4, 2022 I was searching around a local stream when I found some limestone with dozens of crinoid stems. I can't say what the formation is as I think they rolled down a hillside which had foreign limestone blocks to prevent erosion. If they are native, they would be Pennsylvanian Glenshaw Formation. Each of them has stellate lumens and many have a pinkish hue. Can anyone tell me what variety of crinoid and is it possible to discern the period? Thanks. Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 4, 2022 Share Posted November 4, 2022 (edited) Hi, can you take more close ups of the tips and lumens ? Edited November 4, 2022 by fifbrindacier 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Lucid_Bot Posted November 4, 2022 Author Share Posted November 4, 2022 24 minutes ago, fifbrindacier said: Hi, can you take more close ups of the tips and lumens ? Perhaps these will help... Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 4, 2022 Share Posted November 4, 2022 Thank you, this will help. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 4, 2022 Share Posted November 4, 2022 I found that on the net : https://popups.uliege.be/1374-8505/index.php?id=5991 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Missourian Posted November 4, 2022 Share Posted November 4, 2022 Looks like the Grenshaw is basically Kasimovian/Missourian, according to this: Found here: https://fossil.15656.com/local-geology/pine-creek-limestone/ Context is critical. Link to comment Share on other sites More sharing options...
Lucid_Bot Posted November 4, 2022 Author Share Posted November 4, 2022 11 hours ago, fifbrindacier said: I found that on the net : https://popups.uliege.be/1374-8505/index.php?id=5991 I think you've found the answer for me, thank you. Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 4, 2022 Share Posted November 4, 2022 (edited) Happy to to be helpful. The article i found is about Tournaisian crinoids and the formation you're speaking about is Pennsylvanian, though i think the crinoids are carboniferous ones. Edited November 4, 2022 by fifbrindacier "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
cngodles Posted November 4, 2022 Share Posted November 4, 2022 I've found crinoids with that type of flower petal lumen in local gravel. It's not from the Brush or Pine Creek limestone, but some other regional formation where limestone is mined, crushed, and brought in for non-paved roads. 1 Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
Lucid_Bot Posted November 4, 2022 Author Share Posted November 4, 2022 18 minutes ago, cngodles said: I've found crinoids with that type of flower petal lumen in local gravel. It's not from the Brush or Pine Creek limestone, but some other regional formation where limestone is mined, crushed, and brought in for non-paved roads. Yeah, it didn't seem local. Is it impossible to say what period? The pictures online that look similar all say Mississippian. Link to comment Share on other sites More sharing options...
cngodles Posted November 5, 2022 Share Posted November 5, 2022 There are things you can say, like the flower pattern isn’t from here. There are some older Crinoid papers from Kansas that might help. In short, they usually aren’t easy to identify from the columns; it takes the calyx or head to get a genus, etc. 1 Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
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