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  1. Name formalityFormal
    Celestial bodyEarth
    Regional usageGlobal (ICS)
    Time scale(s) usedICS Time Scale
  1. WEBThe 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 the end of the …

  2. 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 …

  3. Eocene Series | Paleocene, Oligocene & Miocene | Britannica