From the modern official history, we know that horsetails, ferns and dinosaurs, pterodactyls, etc. lived on the earth during the Carboniferous period. As evidenced by the footprints of fossils, plants, fish and animals. The same prints show that they knew how to make bolts and nuts. I have photographs of a piece of fossilized cloth in a piece of rock. That is, the ancient reptiles were also able to weave.
I do not want to draw rash conclusions. But (logically) I have the oldest piece of textiles. Do we have rocks in Donbass that are 250-300 million years old? Archaeologists find it difficult to give an unambiguous answer and advise contacting geologists, believing that this is such a structure of the stone. And this is not a stone, but an ordinary layered rock.
Reply to the site administrator: Glory! I found what it is! Stigmaria or root systems of lycopods (Stigmaria). Already found this. I found a small fragment, which is why there are such misunderstandings. But also interesting!
Site administrator: Many thanks to the author for the photo and text provided (the author of the material provided, wished to remain anonymous).
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