Corrected and modeled probability distributions for all AMS and conventional radiocarbon dates for Mound Key.

Marine dates were calibrated using Marine13 with a Delta R of -5 +/-20 and all terrestrial dates were calibrated using IntCal13 curve [65] in a simple phase model in OxCal [66]. All provenience information is provided in the first column and is coded following the site number (8LL2) with operation and unit or core designation (e.g., C-1 for operation C unit 1 or C25 for core 25), followed by level or stratum and feature number and field specimen number (FS) if appropriate. (XLSX)