Lexicon
Intervals
Macrostrat
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Oligocene
21
Type
Epoch
Age range
33.9–23.04
Ma
International Timescale
also
International Epochs
,
Russian Epochs
Cenozoic
Neogene
Miocene
Aquitanian
Paleogene
Oligocene
Chattian
Rupelian
Eocene
Priabonian
34
34
33
33
32
32
31
31
30
30
29
29
28
28
27
27
26
26
25
25
24
24
23
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