33.9 - 27.82 Ma

The definition of this interval in the timescale Mammal Paleogene Zones is taken from the following source:

• M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view

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

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

This interval is used in the definition of 37 collections

A total of 2797 collections with 23031 occurrences lie within this time span