Table S2.

Radial tusk growth rates calculated from multiple carbon-14 analyses of ivory

SampleUCIAMS no.Distance, mmF14C1 σYearRate, mm/y
S7.033_id1672890.51.05740.00162009.8
S7.033_od16729214.31.06710.00162007.97.2
LAC3136_id1696730.51.10070.00172001.2
LAC3136_od16967516.01.11180.00182000.67.0
SGP01.1_id1696510.51.04770.00162011.7
SGP01.1_od16965010.81.05130.00162011.014.4
SGP19.2_id1696640.51.04610.00172012.0
SGP19.2_od16966313.01.05600.00162010.16.4
TOGI037_id1703130.51.04350.00202012.5
TOGI037_od17031213.01.05140.00162011.08.0
HKN159_id1702920.51.04160.00192012.9
HKN159_od17029111.51.04910.00162011.47.3
  • “id” and “od” represent the innermost and outermost dentine, respectively. F14C data of selected ivory samples with thickness >10 mm for innermost (along pulp cavity) and outermost (inside of cementum) dentine. Age of ivory formation calculated using the elephant hair calibration curve (Fig. 1; Table S1).