47.8 - 41.2 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: Eocene epoch
• Cenozoic Subepochs: Middle Eocene subepoch
• Mammal Paleogene Zones: MP 13 zone, MP 11 zone, MP 12 zone, MP 15 zone, MP 14 zone
• Paleogene Mammal Ages of Asia: Arshantan age, Irdinmanhan age, Sharamurunian age
• North American Land Mammal Ages: Uintan age, Bridgerian age
• North American Mammal Subages/Zones: Gardnerbuttian subage, Blacksforkian subage, Twinbuttean subage, Late Uintan subage, Early Uintan subage
• South American Land Mammal Ages: Divisaderan age, Mustersan age
• Cretaceous-Cenozoic of New Zealand: Porangan age, Bortonian age, Arnold epoch, Dannevirke epoch, Heretaungan age

This interval is used in the definition of 1931 collections

A total of 3005 collections with 27892 occurrences lie within this time span