Cenozoic Time Slices
Cenozoic 1
Cenozoic 1: Paleocene through early Eocene (about 66-49 million years)
Cenozoic 2: middle and late Eocene (about 49-34 million years)
Cenozoic 3: early Oligocene (about 34-28 million years)
Cenozoic 4: late Oligocene through middle Miocene (about 28-12 million years)
Cenozoic 5: late Miocene (about 12-5 million years)
Cenozoic 6: Pliocene (about 5-2 million years)
Cenozoic 7: Pleistocene (about 2-0 million years)