37.71 - 33.9 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 11 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Eocene epoch
• Cenozoic Subepochs: Late Eocene subepoch
• Mammal Paleogene Zones: MP 18 zone, MP 17A zone, MP 20 zone, MP 17B zone, MP 19 zone
• Paleogene Mammal Ages of Asia: Ulangochuian age, Houldjinian age, Ergilian age
• North American Land Mammal Ages: Chadronian age, Duchesnean age
• North American Mammal Subages/Zones: Early Chadronian subage, Middle Chadronian subage, Late Chadronian subage
• South American Land Mammal Ages: Divisaderan age, Tinguirirican age
• Calcareous Nannoplankton Zones: NP20 zone, NP19-20 zone, NP17 zone, NP18 zone, NP21 zone, NP19 zone
• Planktic Foraminiferal Zones: H. alabamensis HOZ zone, G. semiinvoluta HOZ zone, G. index HOZ zone
• Geomagnetic Polarity Chrons: C15 chron, C16 chron, C13 chron, C17 chron
• Cretaceous-Cenozoic of New Zealand: Runangan age, Kaiatan age, Whaingaroan age, Landon epoch, Arnold epoch

This interval is used in the definition of 2527 collections

A total of 3619 collections with 39595 occurrences lie within this time span