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  1. 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 Era. The name Eocene comes from the Ancient Greek ἠώς and καινός and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.
    www.wikiwand.com/en/Eocene
    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 follows the Paleocene Epoch and precedes the Oligocene Epoch.
    www.britannica.com/science/Eocene-Epoch
    The Eocene was the second geological epoch in the Palaeogene, and by far the longest. It began 56 million years ago, and ended 33.9 million years ago with a global warning crisis. Before it was the Palaeocene, and after it was the Oligocene.
    simple.wikipedia.org/wiki/Eocene
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    The Eocene Epoch 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 Era. The name Eocene comes from the Ancient Greek ἠώς and καινός and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.
    wikiwand.com
    The end of the Eocene and beginning of the Oligocene is marked with the massive expansion of area of the Antarctic ice sheet that was a major step into the icehouse climate.
    en.wikipedia.org
    The Eocene ( IPA: / ˈiːəsiːn, ˈiːoʊ -/ EE-ə-seen, EE-oh- ) 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 Era.
    en.wikipedia.org
    The Eocene spans the time from the end of the Paleocene epoch to the beginning of the Oligocene epoch. The start of the Eocene is marked by the emergence of the first modern mammals. Within a geologically brief period of time in the early Eocene, most of the modern mammal orders appeared.
    newworldencyclopedia.org
  3. WEBMay 10, 2024 · 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 follows the …

  4. WEBThe Eocene spans the time from the end of the Paleocene epoch to the beginning of the Oligocene epoch. The start of the Eocene is marked by the emergence of the first modern mammals. Within a geologically brief …