Fig. 2: Core metric and techno-typological variables.
From: Technological innovations and hafted technology in central China ~160,000–72,000 years ago
a Cores on flakes. b Discoid cores. c Core length, mass and negative scar size by core type, showing the Mann–Whitney U-test results. d Blank type, platform type and negative scar number by core type, showing the Fisher’s exact test results.
