Table 2.
African MSA samples compared to ethnographic arrowheads and dart tips by independent sample t-tests. *p < .05; **p < .01; ***p < .001; n.s.: the two samples cannot be distinguished with 95% confidence; var: point estimated with the triangular measure, but using the rhomboid measure changes the result.
| Industry | N | Mean TCSA | Mean TCSP | Versus arrowheads | Versus dart tips | ||
|---|---|---|---|---|---|---|---|
| TCSA | TCSP | TCSA | TCSP | ||||
| KRM MSA I: triangular flakes | 71 | 167.98 | 72.68 | *** | *** | *** | *** |
| KRM MSA II lower: triangular flakes | 528 | 216.77 | 77.66 | *** | *** | *** | *** |
| KRM MSA II upper: triangular flakes | 298 | 180.33 | 70.51 | *** | *** | *** | *** |
| South African Stillbay points | 203 | 144.64 | 57.73 | *** | *** | *** | *** |
| Blombos Cave Stillbay points | 239 | 142.85 | 56.65 | *** | *** | *** | *** |
| Porc Epic bifacial points | 94 | 103.29 | 50.25 | *** | *** | *** | n.s. |
| Porc Epic unifacial points | 306 | 88.43 | 50.93 | *** | *** | *** | *, var |
| Aterian tanged points: Aoulef | 4 | 81.13 | 54.76 | *** | *** | * | n.s. |
| Aterian tanged points: Asriouel | 46 | 103.46 | 56.76 | *** | *** | *** | *** |
| Aterian tanged points: Azrag | 18 | 85.28 | 52.02 | *** | *** | ** | n.s. |
| Aterian tanged points: Izouzaden | 12 | 170.83 | 70.33 | *** | *** | *** | *** |
| Aterian tanged points: Bir El Ater | 41 | 124.28 | 63.66 | *** | *** | *** | *** |
| All Aterian tanged points | 124 | 116.38 | 60.02 | *** | *** | *** | *** |