Extended Data Fig. 8: Bladelet-like chert piece, dorsal face, use-wear after removing residues (no. 129). | Nature

Extended Data Fig. 8: Bladelet-like chert piece, dorsal face, use-wear after removing residues (no. 129).

From: Innovative ochre processing and tool use in China 40,000 years ago

Extended Data Fig. 8

(1) mosaic of the distal left portion (3D DM). (3, 4) edge micro-scarring covered by an invasive, grid-influenced plant polish produced by a whittling action (SEM-LFD). (5, 6) portion of the dorsal ridge with a well-developed polish, ploughed by transversal striations (SEM-LFD and OM 50x-lens).

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