33.9 - 23.03 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. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

There are intervals in 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Rupelian age, Chattian age
• Cenozoic Subepochs: Early Oligocene subepoch, Late Oligocene subepoch
• Mammal Paleogene Zones: MP 27 zone, MP 26 zone, MP 25 zone, MP 28 zone, MP 21 zone, MP 29 zone, MP 23 zone, MP 22 zone, MP 24 zone, MP 30 zone
• Paleogene Mammal Ages of Asia: Tabenbulakian age, Hsandagolian age, Kekeamuan age
• North American Land Mammal Ages: Orellan age, Arikareean age, Whitneyan age
• North American Mammal Subages/Zones: Harrisonian subage, early Early Arikareean subage, Geringian subage, early Late Arikareean subage, late Late Arikareean subage, Monroecreekian subage, late Early Arikareean subage
• South American Land Mammal Ages: Deseadan age, Tinguirirican age
• Cretaceous-Cenozoic of New Zealand: Waitakian age, Landon epoch, Whaingaroan age, Duntroonian age

This interval is used in the definition of 673 collections

A total of 5026 collections with 41637 occurrences lie within this time span