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Bomb radiocarbon chronologies for Astarte moerchi (black circles). Horizontal bars are estimated sampled period for Δ14C analysis. Fitted lines are locally weighted least square (LOESS) regressions. Reference chronologies are from Campana et al. [49]: marine Northwest Atlantic (NWA) reference chronology (light grey diamond), arctic marine surface waters (0–100 m) (grey downward triangle), and arctic marine deep waters (300 m on average) (dark grey upward triangle).
