Stable oxygen isotopes of Thoracosphaera heimii (Dinophyceae) in relationship to temperature; a culture experiment

The results of this study as well as the broad geographic distribution of T. heimii, its stable position within the water column, its presence in the geological record since the Late Cretaceous and its resistance against dissolution compared to other plankton groups underlines the potential for a wide usability of the oxygen isotope composition of T. heimii as palaeotemperature proxy for the deeper parts of the photic zone.