minnbuckeye Posted July 21, 2022 Share Posted July 21, 2022 This was discovered yesterday on an excursion into Iowa's Ordovician Decorah Shale. Initially I thought a star shaped crinoid columnal but on close examination, no lumen can be seen. The specimen is about 5 mm in diameter. @crinus Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 21, 2022 Share Posted July 21, 2022 Crinoid calyx plate? 3 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Northern Sharks Posted July 21, 2022 Share Posted July 21, 2022 1 minute ago, Fossildude19 said: Crinoid calyx plate? That would be my guess as well, something along the lines of Carabocrinus. 1 1 1 There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted July 21, 2022 Share Posted July 21, 2022 Yes, I agree with a calyx plate from a stalked echinoderm. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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