27.3 - 23.04 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2024. The ICS International Chronostratigraphic Chart v2024/12. International Commission on Stratigraphy view

There are intervals in 12 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Oligocene epoch
• Cenozoic Subepochs: Late Oligocene subepoch
• Mammal Paleogene Zones: MP 26 zone, MP 30 zone, MP 28 zone, MP 25 zone, MP 29 zone, MP 27 zone
• Paleogene Mammal Ages of Asia: Hsandagolian age, Tabenbulakian age
• North American Land Mammal Ages: Arikareean age
• North American Mammal Subages/Zones: early Late Arikareean subage, Harrisonian subage, early Early Arikareean subage, late Late Arikareean subage, late Early Arikareean subage, Monroecreekian subage, Geringian subage
• South American Land Mammal Ages: Deseadan age
• Calcareous Nannoplankton Zones: NN1 zone, NP23 zone, NP25 zone, NP24 zone
• Planktic Foraminiferal Zones: P. opima HOZ zone, P. pseudokugleri LOZ zone, G. ciperoensis PRZ zone
• Neogene North Pacific Diatom Biochronology: Thalassiosira praefraga zone
• Geomagnetic Polarity Chrons: C7 chron, C9 chron, C6C chron, C8 chron, C7A chron
• Cretaceous-Cenozoic of New Zealand: Waitakian age, Duntroonian age, Landon epoch

This interval is used in the definition of 2112 collections

A total of 2913 collections with 26040 occurrences lie within this time span