Crittle Posted June 29, 2021 Share Posted June 29, 2021 This was found in Southampton on the beach. Would like help in ID-ing it. I am thinking pumice stone, but maybe sponge coral? The back side shows impressions of shell fossils, and inside there is a lighter layer/section you can see, could this be more shell fossils inside ? I tried scratching it and it is soft. Could/should I try splitting it to see what is inside? Link to comment Share on other sites More sharing options...
Rockwood Posted June 29, 2021 Share Posted June 29, 2021 Those are bivalve mollusk borings. Pholads perhaps. 1 Link to comment Share on other sites More sharing options...
fifbrindacier Posted June 29, 2021 Share Posted June 29, 2021 You can rule out sponge and coral. I agree with @Rockwoodand i see an imprint of a pectinid-like shell on the last photo. "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...
DPS Ammonite Posted June 30, 2021 Share Posted June 30, 2021 The real mystery is what was it doing near Lake Huron. It looks like a rock burrowed by marine clams. I bet that it was ship ballast brought from far away. 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Crittle Posted June 30, 2021 Author Share Posted June 30, 2021 That was quick. Thank you both! Link to comment Share on other sites More sharing options...
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