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Either humans existed 65 million years ago or dinosaurs existed 6000 years ago. There are no other possibilities.
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this post was submitted on 19 Aug 2024
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It's a crinoid.
https://en.wikipedia.org/wiki/Crinoid#Diversity
It's certainly not a spiral thread, but individual rings, which aren't even uniform enough if they were a thread of a bolt or a screw.
There is no question in my mind that it's a crinoid. I grew up in a town in Southern Indiana that was essentially a giant crinoid bed in the Cambrian. I had so many pieces of crinoid. I even had a "flower," which were really hard to find. Sadly, I lost it.
Here's a bunch of "stems":
Here's a "flower":
I put those words in quotes, because a crinoid is actually an animal, not a plant. Here's a sea lily, one of its modern descendents.
I had no idea those were animals. Fascinating.