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The Cenozoic Era is currently divided into 3 Periods and 7 Epochs. There is even an argument at the moment for an 8th Epoch,

The Cenozoic Eta (65.5 Ma - Now)

  • Paleogene Period (65.5 - 23.03 Ma)
    • Paleocene Epoch (65.5 - 55.8 Ma)
    • (65 mya to 55 mya - Rise of Mammals)
    • Eocene Epoch (55.8 - 33.9 Ma)
    • (55 mya to 38 mya - Saber Tooth Cats, Primitive Horses)
    • Oligpcene Epoch (33.9 - 23.03Ma)
    • (38 mya to 25 mya - First Primates)
  • Neogene Period (23.03 - 2.588 Ma)
    • Miocene Epoch (23.03 - 5.332Ma)
    • (25 mya to 5 mya - Apes)
    • Pliocene Epoch (5.332 - 2.588Ma)
    • (5 mya to 2 mya - First Man)
  • Quaternary Period (2.588 Ma - now)
    • Pleistocene Epoch (2,588 - 11.7 Ka)
    • (2 mya to 10,000 years ago - The Rise of Man)
    • Holocene Epoch (11.7 Ka - Now)
    • (10,000 years ago to present - Modern Man)
    • mya=million years ago
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9y ago
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15y ago

It began with the end of the last glaciation episode.

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8y ago

The Cenozoic Era began about 65 million years ago and continues today.

~Pinksakuraeya

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Q: How did the Cenozoic era begin?
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