37.71 - 33.9 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 9 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Eocene epoch, Priabonian age
• Cenozoic Subepochs: Late Eocene subepoch
• Mammal Paleogene Zones: MP 19 zone, MP 17A zone, MP 17B zone, MP 20 zone
• Paleogene Mammal Ages of Asia: Ulangochuian age, Ergilian age, Houldjinian age
• North American Land Mammal Ages: Chadronian age, Duchesnean age
• North American Mammal Subages/Zones: Early Chadronian subage, Late Chadronian subage, Middle Chadronian subage
• South American Land Mammal Ages: Divisaderan age, Tinguirirican age
• Calcareous Nannoplankton Zones: NP19-20 zone, NP17 zone, NP21 zone, NP18 zone
• Cretaceous-Cenozoic of New Zealand: Arnold epoch, Whaingaroan age, Landon epoch, Runangan age, Kaiatan age

This interval is used in the definition of 5 collections

A total of 3060 collections with 33046 occurrences lie within this time span