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Hi, everyone. I found this rock yesterday in Illinois. I was thinking it could be petrified wood. I had my doubts, so posted elsewhere looking for an ID and received a response of “some type of coral”. Later in the night, while looking up fossil corals, I happened upon the word “Chaetetes“. When I looked it up, a few pictures seem like a close match…maybe exact? I’m wondering what the experienced think about it. Thank you. 








Edited by FossilFamily_24
additional picture.
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I don't see this being a coral or a Chaetetid. I can see why wood might be suggested, but I think it's a long shot. 

  • I Agree 1
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