randyfossil Posted November 29, 2015 Share Posted November 29, 2015 this was found in the bank of a small creek in Johnson County Kansas 20 years ago. it was partially exposed when first spotted.all this time I thought it was a turtle shell, but now I'm not so sure. appreciate any help, thank you. Link to comment Share on other sites More sharing options...
Bullsnake Posted November 29, 2015 Share Posted November 29, 2015 Hi, randyfossil, and welcome. Doesn't look like anything I've seen. I don't think it's a fossil, but possibly a large concretion, geological in origin. Otherwise, it kind of looks man-made, almost like plaster or something. I hope someone sees something I'm missing about it! Steve Steve Link to comment Share on other sites More sharing options...
Rockwood Posted November 29, 2015 Share Posted November 29, 2015 When I combine the possible growth lines in the second photo to the faint suggestion of symmetry in the first I come up with large bivalve. Link to comment Share on other sites More sharing options...
Auspex Posted November 29, 2015 Share Posted November 29, 2015 My first impression is mudstone concretion. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Bullsnake Posted November 29, 2015 Share Posted November 29, 2015 (edited) My first impression is mudstone concretion. For comparison. This is from the Hickory Creek member of the Plattsburg fm. in Wyandotte Co., Ks. The biggest one is about the size of a softball. What baffles me is how the OP's is broken. These things are extremely hard, and pretty much require a sledge hammer just to chip it. Edited November 29, 2015 by Bullsnake Steve Link to comment Share on other sites More sharing options...
Auspex Posted November 29, 2015 Share Posted November 29, 2015 ...What baffles me is how the OP's is broken. These things are extremely hard, and pretty much require a sledge hammer just to chip it... It may have not completely lithified, and subsequent weathering left it as we see. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Drizzt0000 Posted January 2, 2017 Share Posted January 2, 2017 Still a cool find though grats Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 2, 2017 Share Posted January 2, 2017 On 29 novembre 2015 at 11:50 AM, Rockwood said: When I combine the possible growth lines in the second photo to the faint suggestion of symmetry in the first I come up with large bivalve. If @Rockwoodis right, then it must be a kind of inoceramus, but i am not against the ID of a concretion. In that case i suggest it could be a Breccia. Here is a link to a site on the fossils of Kansas : http://kansasgeology.weebly.com "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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