14C ages are reported in conventional radiocarbon years (before present = 1950) in accordance with international convention [13].

All calculated 14C ages have been corrected for fractionation so that they are equivalent with the standard 13C value of -25‰ (wood). Following Reimer et al. (2013)[14]calibrated ages in calendar years were obtained from the calibration tables in OxCal v. 4.2 [15–17]. Laboratory number, field ID, type, species, pre-treatment efficiency (Eff%), carbon percent (C %), radiocarbon age and calibrated ranges in year BP for the ±1 standard deviation and ±2 standard deviation are provided for each sample.