Antarctic Isotope Maxima events 24 and 25 identified in benthic marine δ¹⁸O

High‐resolution planktic and benthic δ 18 O records at Site 1146 (northern South China Sea) include structure within Marine Isotope Stage 5.4, 118.5–105.9 ka, that is not captured in stacked δ 18 O records commonly used for age model construction and as proxies for global ice volume. Leveraging a common monsoonal influence, Site 1146 planktic δ 18 O was aligned to speleothem δ 18 O from southeastern China to derive a radiometrically calibrated (RC) age model. On the RC age model, the benthic δ 18 O record contains structure equivalent in time to Antarctic Isotope Maximum (AIM) events 24 and 25. Sea level reconstructions for isotopic event 5.4 suggest that these benthic δ 18 O events (AIM 24 and 25) derive from isotopic change (ice volume) although some temperature change cannot be completely excluded.