Hitherto, during the Tertiary period, the temperature of Europe seems to have been steadily but slowly decreasing, from the Eocene epoch, when it was subtropical, to the end of the Pliocene, when it ...

The Eocene is a formally defined epoch of the Paleogene Period within the Cenozoic Era, spanning approximately 56 to 34 million years ago, characterized by globally warm climates and high atmospheric ...