“…The development of sclerochronological records, incorporating the analyses of the physical and geochemical variations in the accretionary skeletal tissues of aquatic, marine, and terrestrial organisms (e.g., Hudson et al, ; Oschmann, ), provides the opportunity for the generation of absolutely dated and robustly calibrated reconstructions of past climate variability. Reconstructions derived from the analyses of marine bivalve growth increment width chronologies, constructed using dendrochronological cross‐dating techniques (e.g., Butler et al, ; Jones, ; Jones et al, ; Marchitto et al, ), and stable isotope (δ 18 O and δ 13 C; e.g., Reynolds et al, ; Schöne et al, ; Wanamaker et al, , ; Witbaard et al, ) and radioisotope ( 14 C; Wanamaker et al, ) time series developed from long‐lived marine bivalves, such as Arctica islandica and Glycymeris glycymeris , are now realized as robust archives of past marine variability. Hitherto, marine bivalve sclerochronological archives have provided robust reconstructions of past SWTs (Brocas et al, ; Mette et al, ; Reynolds et al, , ; Schöne et al, ), oceanic carbon dynamics (Schöne et al, ), marine radiocarbon reservoir ages (Wanamaker et al, ), coupled ocean and terrestrial ecosystem dynamics (Black, ; Black et al, ; Helama et al, ) and to investigate the mechanisms and drivers of ocean variability (Lohmann & Schöne, ; Reynolds et al, , ).…”