Table 1.
Summary statistics and information for the control and MSA samples.
| Industry | N | Width | Thickness | Cross-section estimate | Source | ||
|---|---|---|---|---|---|---|---|
| Mean | StDev | Mean | StDev | ||||
| Arrowheads | 118 | 15.09 | 3.93 | 4.13 | 1.29 | Bifacial Rhomboid | Thomas 1978 [49] |
| Dart-tips | 40 | 23.05 | 4.45 | 4.96 | 1 | Bifacial Rhomboid | Thomas 1978 [49]; Shott 1997 [50] |
| KRM MSA I: Triangular flakes | 71 | 33.61 | 6.04 | 9.82 | 2.17 | Unifacial Triangular | S. Wurz |
| KRM MSA II Lower: Triangular flakes | 528 | 35 | 7.85 | 11.96 | 3.87 | Unifacial Triangular | S. Wurz |
| KRM MSA II Upper: Triangular flakes | 298 | 31.77 | 7.17 | 10.93 | 2.95 | Unifacial Triangular | S. Wurz |
| South African Stillbay points | 203 | 27 | 7.8 | 9.94 | 3.83 | Bifacial Rhomboid | T. Minichillo |
| Blombos Cave Stillbay points | 239 | 26.56 | 9.77 | 9.53 | 4.46 | Bifacial Rhomboid | M. Soressi |
| Porc Epic Bifacial Points | 94 | 23.61 | 5.82 | 8.36 | 2.66 | Bifacial Rhomboid | D. Pleurdeau |
| Porc Epic Unifacial Points | 306 | 23.15 | 5.6 | 7.45 | 2.22 | Unifacial Triangular | D. Pleurdeau |
| Aterian tanged points: Aoulef | 4 | 26 | 3.56 | 6.13 | 1.32 | Unifacial Triangular | T. Tillet; J. Shea |
| Aterian tanged points: Asriouel | 46 | 26.26 | 5.33 | 7.65 | 1.86 | Unifacial Triangular | T. Tillet; J. Shea |
| Aterian tanged points: Azrag | 18 | 24.17 | 5.09 | 6.83 | 1.76 | Unifacial Triangular | T. Tillet; J. Shea |
| Aterian tanged points: Izouzaden | 12 | 31.92 | 5.84 | 10.58 | 1.62 | Unifacial Triangular | T. Tillet; J. Shea |
| Aterian tanged points: Bir El Ater | 41 | 29.63 | 8.19 | 8.17 | 1.7 | Unifacial Triangular | Peabody Museum; J. Shea |
| All Aterian tanged points | 124 | 27.65 | 6.78 | 7.95 | 2.01 | Unifacial Triangular | — |