56 - 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. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

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

• International Chronostratigraphic Timescale: Priabonian age, Lutetian age, Bartonian age, Ypresian age
• Cenozoic Subepochs: Early Eocene subepoch, Middle Eocene subepoch, Late Eocene subepoch
• Mammal Paleogene Zones: MP 20 zone, MP 17A zone, MP 14 zone, MP 8 + 9 zone, MP 18 zone, MP 15 zone, MP 11 zone, MP 17B zone, MP 13 zone, MP 10 zone, MP 16 zone, MP 12 zone, MP 7 zone, MP 19 zone
• Paleogene Mammal Ages of Asia: Irdinmanhan age, Ulangochuian age, Bumbanian age, Sharamurunian age, Houldjinian age, Arshantan age, Ergilian age
• North American Land Mammal Ages: Chadronian age, Duchesnean age, Wasatchian age, Bridgerian age, Clarkforkian age, Uintan age
• North American Mammal Subages/Zones: Gardnerbuttian subage, Cf1 zone, Early Chadronian subage, Sandcouleean subage, Twinbuttean subage, Late Chadronian subage, Early Uintan subage, Cf3 zone, Cf2 zone, Graybullian subage, Lysitean subage, Late Uintan subage, Blacksforkian subage, Middle Chadronian subage, Lostcabinian subage
• South American Land Mammal Ages: Mustersan age, Tinguirirican age, Divisaderan age, Casamayoran age
• Cretaceous-Cenozoic of New Zealand: Dannevirke epoch, Porangan age, Whaingaroan age, Heretaungan age, Kaiatan age, Waipawan age, Runangan age, Landon epoch, Bortonian age, Mangaorapan age, Arnold epoch

This interval is used in the definition of 625 collections

A total of 13596 collections with 127602 occurrences lie within this time span