Extended Data Fig. 5: Additional Chiquihuite lithic artefacts.
From: Evidence of human occupation in Mexico around the Last Glacial Maximum

a–c, Cores. d, e, Bifacial preforms on ovoid nodules. f–n, Flakes. o–t, Blades. u–x, Microliths. y, w, Burins. z, a′, Scrapers. b′–l′, Points and point-like shapes. m′–p′, Geometric items made by fracturing calcite laminae. Artefacts i, n, o, b′, c′, f′, and k′ are from SC-C; all others are from SC-B. Scale bars, 1 cm.