Unveiling bast fiber production in Upper Paleolithic North China: Microfibers and usewear traces on stone tools from Shizitan
Fig 7
Bast fiber associated elements from SZT lithic tools.
(a) A large clustered crystal, resembling velvetleaf (14-GS3); (b) a group of small clustered crystals, resembling hemp (29-SF4); (c) small clustered crystals attached to epidermis; (d) enlarged image of a crystal from (c); (e) yeast cells in budding process; (f) curved hair cell, resembling hemp; (g) pitted vessel cells. (Crystals, hair cell, and pitted vessel cells are comparable with corresponding elements from modern examples in Fig 2e–2g; all images from 14-GS3 except b).