Table 2.
Occurrence of the cortical traits for each sample group (* p-value < 0,05; ** p-value < 0,001)
| Anterior | Anterior angled | Lateral | Posterior | Grazing | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | 10 | 5 | 5 | 5 | 5 | |||||
| Entrance traits | ||||||||||
| Round hole | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Radiating fracture | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Concentric fracture* | 10 | 100% | 4 | 80% | 3 | 60% | 2 | 40% | 0 | 0% |
| longitudinal* | 10 | 100% | 4 | 80% | 3 | 60% | 2 | 40% | 0 | 0% |
| transversal | 0 | 0% | 0 | 0% | 0 | 0% | 1 | 20% | 0 | 0% |
| V-shape* | 10 | 100% | 4 | 80% | 5 | 100% | 3 | 60% | 2 | 40% |
| Ring defect | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 4 | 80% |
| Tip fragmentation* | 9 | 90% | 5 | 100% | 5 | 100% | 5 | 100% | 2 | 40% |
| proximal* | 8 | 80% | 0 | 0% | 5 | 100% | 3 | 60% | 2 | 40% |
| distal* | 9 | 90% | 5 | 100% | 2 | 40% | 4 | 80% | 1 | 20% |
| Wing flake | 6 | 60% | 4 | 80% | 3 | 60% | 1 | 20% | 0 | 0% |
| Wing flake defect* | 9 | 90% | 4 | 80% | 3 | 60% | 2 | 40% | 0 | 0% |
| Wing piece | 10 | 100% | 4 | 80% | 5 | 100% | 5 | 100% | 4 | 80% |
| Lateral notch | 10 | 100% | 3 | 60% | 3 | 60% | 4 | 80% | 3 | 60% |
| Internal bevelling* | 10 | 100% | 5 | 100% | 5 | 100% | 3 | 60% | 5 | 100% |
| Exit traits | ||||||||||
| Square hole | 9 | 90% | 4 | 80% | 2 | 40% | 2 | 40% | N/A | |
| Radiating fracture | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Concentric fracture | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 4 | 80% |
| longitudinal* | 7 | 70% | 1 | 20% | 3 | 60% | 5 | 100% | 5 | 100% |
| transversal** | 10 | 100% | 5 | 100% | 5 | 100% | 4 | 80% | 0 | 0% |
| Layered breakage | 9 | 90% | 5 | 100% | 3 | 60% | 5 | 100% | 4 | 80% |
| External bevelling** | 10 | 100% | 5 | 100% | 5 | 100% | 4 | 80% | 0 | 0% |
| Stepped breakout* | 8 | 80% | 2 | 40% | 2 | 40% | 1 | 20% | 0 | 0% |
| General traits | ||||||||||
| Plastic deformation | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Marginal chipping | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Fracture surface scaling | 10 | 100% | 5 | 100% | 5 | 100% | 5 | 100% | 5 | 100% |
| Grey discolouration* | 4 | 40% | 0 | 0% | 3 | 60% | 5 | 100% | 3 | 60% |