NiNjA Posted March 5, 2023 Share Posted March 5, 2023 Found in my customers yard with several others I have not cleaned but will add later. This one is just too interesting. I tried to look online but couldn't find anything. I even used Google lens but still wasn't able to get anywhere Thx in advance for help Sara Link to comment Share on other sites More sharing options...
Ludwigia Posted March 5, 2023 Share Posted March 5, 2023 Might be a piece of a fossilized nautilus shell, but that's just a shot in the dark. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
fifbrindacier Posted March 5, 2023 Share Posted March 5, 2023 3 hours ago, Ludwigia said: Might be a piece of a fossilized nautilus shell, but that's just a shot in the dark. That's the second time today that i must agree with you Roger 1 "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...
rocket Posted March 5, 2023 Share Posted March 5, 2023 Think so, too, part of a Nautilid Link to comment Share on other sites More sharing options...
Al Dente Posted March 5, 2023 Share Posted March 5, 2023 I think it is too asymmetric to be from a nautiloid, and the shell portions are too thick (dissolved away in this specimen). I think this is from the hinge area of a bivalve. I’ve seen similar that others have identified as Spondylus or related. 2 Link to comment Share on other sites More sharing options...
JohnJ Posted March 7, 2023 Share Posted March 7, 2023 I think Eric is right about this not being a nautiloid. I also agree it's from a bivalve, but not the hinge area. I believe this is a mold of caprinid rudist internal structures known as tabulae. Rudists are reef building bivalves that wall off areas within their shell as they grow. Over time, these chambers fill with sediment and can mimic many other fossils. http://www.digimorph.org/specimens/Caprinuloidea_perfecta/anatomy.phtml 1 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
M Harvey Posted March 7, 2023 Share Posted March 7, 2023 My first impression was a partial nautilus. My second impression is a gastropod like the base of a conch. Link to comment Share on other sites More sharing options...
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