The Eocene is a dynamic epoch that represents global climatic transitions between two climatic extremes, transitioning from the hot house to the cold house.

Eocene Epoch, second of three major worldwide divisions of the Paleogene Period (66 million to 23 million years ago) that began 56 million years ago and ended 33.9 million years ago. It …

The early Eocene (Ypresian) is thought to have had the highest mean annual temperatures of the entire Cenozoic Era, with temperatures about 30° C; relatively low temperature gradients from …

The Eocene epoch (56-34 million years ago) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. The Eocene spans the time from …

Early in the Eocene, the global climate remains warm. As the continents move ever closer to their present-day positions, this plate activity alters ocean and air circulation patterns. By the end...

Aug 4, 2025 · Learn about the Eocene, a transformative geological epoch where Earth’s climate evolved and many modern animal groups first emerged.

Sep 8, 2025 · The Eocene was an epoch of significant mammalian evolution, following the extinction of dinosaurs at the end of the Cretaceous period. A wide range of mammalian …

The Eocene is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic...

Lasting nearly 22 million years, the Eocene is the longest epoch of the Cenozoic. During this time, the first ancestors and close relatives of modern mammal species appeared.

The Eocene was the second geological epoch in the Palaeogene, and by far the longest. [1] It began 56 million years ago, and ended 33.9 million years ago with a global warming crisis.