hiposong Posted June 11, 2020 Share Posted June 11, 2020 Some are larger than 3cm in diameter, which is a little weird, which one is it? Link to comment Share on other sites More sharing options...
Creek - Don Posted June 12, 2020 Share Posted June 12, 2020 Where did you find it? What formation? Permian fusulinid biostratigraphy of the Baoshan Block in western Yunnan, China 2 Link to comment Share on other sites More sharing options...
supertramp Posted June 12, 2020 Share Posted June 12, 2020 I see some resemblance with pisoids or oncoids; ciao https://www.google.com/search?q=pisoids&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj59aeouPvpAhUQqYsKHQULDYEQ_AUoAXoECA4QAw&biw=1366&bih=625 https://www.google.it/search?q=oncoids&dcr=0&source=lnms&tbm=isch&sa=X&ved=2ahUKEwicprDPuPvpAhWBp4sKHczcA9MQ_AUoAXoECA8QAw&biw=1517&bih=694 1 Link to comment Share on other sites More sharing options...
hiposong Posted June 12, 2020 Author Share Posted June 12, 2020 7 hours ago, Creek - Don said: Where did you find it? What formation? Permian fusulinid biostratigraphy of the Baoshan Block in western Yunnan, China Thank you. Your pictures are excellent. The categories are very detailed.Comparing and referring to the Google links of the guy down there, I don't think they're fossils, they're more like beanstones or ooliths, and I've read some papers and found that it could be algae. Now I'm a little confused.I find it at 15 kilometers southwest of Anyang City, Henan Province.(about 400 kilometers south of Beijing).There is plenty of conglomerate where it is found, but very little of this kind, geologically, is mainly quaternary.The bonded object is calcium carbonate, and the sphere is silicon dioxide. Link to comment Share on other sites More sharing options...
hiposong Posted June 12, 2020 Author Share Posted June 12, 2020 2 hours ago, supertramp said: I see some resemblance with pisoids or oncoids; ciao https://www.google.com/search?q=pisoids&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj59aeouPvpAhUQqYsKHQULDYEQ_AUoAXoECA4QAw&biw=1366&bih=625 https://www.google.it/search?q=oncoids&dcr=0&source=lnms&tbm=isch&sa=X&ved=2ahUKEwicprDPuPvpAhWBp4sKHczcA9MQ_AUoAXoECA8QAw&biw=1517&bih=694 Thanks for the link.This gives me important information.And then, ha-ha, I'm a little confused.Their naturally weathered surface is very much like Rogenstein ooids,but much larger.At the same time, its appearance and structure is very similar to another post in this forum,Interestingly, such stones are also rare in the region where they were found.It could also be the growth of cyanobacteria,I have no idea, but thanks again, I'm going to prepare the fern fossil hunting data:) http://www.thefossilforum.com/index.php?/topic/104230-oncoids-oncolites/ Link to comment Share on other sites More sharing options...
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