Table 4.

Description of the multiple correspondence analysis’s axes. Significant correlations of the variables with the first two dimensions are shown. Category: (-) trait absence, (+) trait presence. Abbreviations of the variables: exCFxTrans– transversal concentric fracture exit; extBev– external bevelling; CFxLong– longitudinal concentric fracture entry; flakeDef– wing flake defect; vShape– V-shape; steBreak– stepped breakout; TF– tip fragmentation; TFdist– tip fragmentation distal to the entry; flake– wing flake; exCFxLong– longitudinal concentric fractures exit; TFprox– tip fragmentation proximal to the entry; intBev– internal bevelling; grey– grey discolouration

Percentage of the variance	Variable	Category	R2	p-value
Dim 1 (34,83%)	Sample group	Grazing	0,8944	7,656e-12
	exCFxTrans	-	0,7382	1,224e-09
	extBev	-	0,7203	3,111e-09
	CFxLong	-	0,5730	1,290e-06
	flakeDef	-	0,4436	5,879e-05
	vShape	-	0,3881	2,358e-04
	steBreak	-	0,3624	4,327e-04
	TF	-	0,3611	4,460e-04
	TFdist	-	0,3164	1,213e-03
	flake	-	0,3156	1,237e-03
	exCFxLong	+	0,1572	3,010e-02
Dim 2 (15,52%)	TFprox	+	0.5015	1.198e-05
	intBev	-	0.4634	3.478e-05
	exCFxLong	+	0.2993	1.756e-03
	TF	+	0.2292	7.445e-03
	grey	+	0.2270	7.774e-03
	Sample group	Posterior	0.3377	3.026e-02
	CFxLong	-	0.1387	4.265e-02