Thefossildude Posted November 21, 2016 Share Posted November 21, 2016 Found in illinois near a river. Any ideas? Link to comment Share on other sites More sharing options...
crinoid1 Posted November 21, 2016 Share Posted November 21, 2016 This could be a few things: a brachiopod, part of a horn coral, or possibly some other invertebrate. It's a shame this little guy isn't more complete, as I could be a little more confident in an ID! Whatever it is, it does look neat. I lean most towards brachiopod. I like crinoids...... Link to comment Share on other sites More sharing options...
Raggedy Man Posted November 21, 2016 Share Posted November 21, 2016 Some general information about the location you found it would help...like, county...river name. It could come from natural erosion from a rock face or erratic glacial deposition. Thanks Best regards, Paul ...I'm back. Link to comment Share on other sites More sharing options...
Rockwood Posted November 21, 2016 Share Posted November 21, 2016 I would also lean toward brachiopod. I find relatively coarse ridged shells of them that are crushed and distorted as this appears to be. This would be a piece of the internal mold. The ridges would likely be to some extent an overprinted external feature. Link to comment Share on other sites More sharing options...
abyssunder Posted November 21, 2016 Share Posted November 21, 2016 Welcome to the Forum ! I see it as a sedimentary rock with a shell imprint on one side. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
ashcraft Posted November 21, 2016 Share Posted November 21, 2016 Probably a chert nodule with a brachiopod imprint. Probably Paleozoic era. Possibly wash out of the Appalahian mountains, but could be from material out of Michigan, Wisconsin, Minnesota area. ashcraft, brent allen Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 21, 2016 Share Posted November 21, 2016 I vote for @abyssunder's opinion. "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...
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