San Diego Natural History Museum
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Geologic Timeline: The last 144 million years of Earth's 4.6 billion year history.

painting of mammoth in grassland
An imperial mammoth (Mammuthus imperator), marches through an oxbow lake
in Southern California 300,000 years ago. Painting by Jim Melli.


Mammoths

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Pleistocene Epoch 1.8 million-10,000 years ago.
Pliocene Epoch 5-1.8 million years ago.
Miocene Epoch 24-5 million years ago.
Oligocene Epoch 34-24 million years ago.
Eocene Epoch 53-34 million years ago.
Paleocene Epoch 65-55 million years ago.
Cretaceous/Tertiary Boundary Rock, 65 million years ago.
Cretaceous Period 144-65 million years ago.
Earth's history began 4.6 billion years ago.
MYA = million years ago.