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Evidence for Early Hafted Hunting Technology

Science  16 Nov 2012:
Vol. 338, Issue 6109, pp. 942-946
DOI: 10.1126/science.1227608

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  1. Fig. 1

    (A to M) A sample of KP1 complete retouched points. All are banded ironstone except (A) and (C) (black chert). Additional points are presented in figs. S3 and S4.

  2. Fig. 2

    (A and B) Distal step-terminating bending fractures on ventral surfaces of complete nonretouched convergent blades, banded ironstone. (C) Distal impact burination on ventral surface of a complete nonretouched convergent flake, banded ironstone. (D) Distal impact burination on ventral surface of complete nonretouched convergent blade, banded ironstone. (E) Comparison of DIF frequencies (95% confidence intervals) at Holocene kill and habitation sites with well-established weapon tips (11, 27, 28, 36), experimental weapon tip studies (10, 27, 3740), trampling experiments (32, 41), and KP1.

  3. Fig. 3

    (A) Box-plot comparison of published TCSP values for ethnographic arrowheads and darts (17), experimental spear tips (this study), MSA points from Klasies River Mouth (KRM), various South African Still Bay sites and Still Bay levels at Blombos Cave (17), and KP1 points (this study). (B) Box plot of principal component 2 (PC2) from the relative warps analysis (26) for four size groups (based on maximum length) of approximately equal sample size for all retouched KP1 points (n = 69). Size group one includes points 41.3 to 56.6 mm; size group two, 57.4 to 68.7 mm; size group three, 68.8 to 82.5 mm; and size group four, 82.8 to 117.8 mm. On the y axis, a value of zero represents symmetry, and a value further from zero represents decreased symmetry.

  4. Fig. 4

    Comparison of ventral edge damage distributions. (A) Complete KP1 points (n = 106). (B) Post-patination damage on complete KP1 points (n = 106), serving as proxy for post-depositional processes. (C) PP13B complete points, whose cutting function is inferred (n = 86). (D) Experimental spear tips (n = 32). (E) Consensus shape of KP1 points based on geometric morphometric analysis (26).