Multiple geochemical and paleontological studies confirm that the Paleocene epoch and its associated thermal maximum featured global temperatures significantly higher than those of the present day.
The retrieved papers consistently demonstrate that the Paleocene epoch, including the Paleocene-Eocene Thermal Maximum, experienced global mean surface temperatures significantly higher than modern or pre-industrial levels. Papers [0], [5], and [10] directly quantify these elevated temperatures using various proxies such as deep-sea sediment records and soil clumped isotopes. Therefore, the claim is strongly supported by the evidence.