2 ms·
https://www.sciencedirect.com/science/article/abs/pii/S0277379113003788 https://www.sciencedirect.com/science/article/abs/pii/S02773... is apparently the releva
by morelisp 7y ago
https://www.sciencedirect.com/science/article/abs/pii/S0277379113003788 https://www.sciencedirect.com/science/article/abs/pii/S02773... is apparently the relevant paper.
The fiber was some remnants found on stone tools, apparently. I don't have the archaeological background to say if the claim it's not possible to twist in nature in plausible or not.