33.9 - 27.82 Ma

The definition of this interval in the timescale Cenozoic Subepochs is taken from the following source:

• W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view

There are intervals in 7 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Oligocene epoch, Rupelian age
• Mammal Paleogene Zones: MP 23 zone, MP 22 zone, MP 21 zone, MP 25 zone, MP 24 zone
• Paleogene Mammal Ages of Asia: Hsandagolian age, Kekeamuan age
• North American Land Mammal Ages: Whitneyan age, Orellan age, Arikareean age
• North American Mammal Subages/Zones: late Late Arikareean subage, early Late Arikareean subage, late Early Arikareean subage, early Early Arikareean subage, Geringian subage
• South American Land Mammal Ages: Tinguirirican age, Deseadan age
• Cretaceous-Cenozoic of New Zealand: Whaingaroan age, Landon epoch

This interval is used in the definition of 771 collections

A total of 2804 collections with 23105 occurrences lie within this time span