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. 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: Bartonian age, Priabonian age, Lutetian age, Ypresian age
• Cenozoic Subepochs: Early Eocene subepoch, Middle Eocene subepoch, Late Eocene subepoch
• Mammal Paleogene Zones: MP 19 zone, MP 11 zone, MP 16 zone, MP 7 zone, MP 14 zone, MP 12 zone, MP 18 zone, MP 8 + 9 zone, MP 20 zone, MP 10 zone, MP 17B zone, MP 17A zone, MP 13 zone, MP 15 zone
• Paleogene Mammal Ages of Asia: Bumbanian age, Houldjinian age, Irdinmanhan age, Sharamurunian age, Arshantan age, Ulangochuian age, Ergilian age
• North American Land Mammal Ages: Duchesnean age, Uintan age, Bridgerian age, Chadronian age, Wasatchian age
• North American Mammal Subages/Zones: Twinbuttean subage, Sandcouleean subage, Lostcabinian subage, Graybullian subage, Late Uintan subage, Middle Chadronian subage, Early Uintan subage, Late Chadronian subage, Lysitean subage, Gardnerbuttian subage, Blacksforkian subage, Early Chadronian subage
• South American Land Mammal Ages: Tinguirirican age, Divisaderan age, Mustersan age, Casamayoran age
• Calcareous Nannoplankton Zones: NP12 zone, NP15 zone, NP20 zone, NP18 zone, NP16 zone, NP13 zone, NP21 zone, NP14 zone, NP10 zone, NP17 zone, NP19-20 zone, NP19 zone, NP11 zone
• Planktic Foraminiferal Zones: A. cuneicamerata LOZ zone, O. beckmanni TRZ zone, P. wilcoxensis/M. velascoensis CRZ zone, G. pseudomenardii TRZ zone, G. kugleri/M. aragonensis CRZ zone, M. crassatus HOZ zone, M. marginodentata PRZ zone, G. semiinvoluta HOZ zone, M. formosa LOZ zone, A. sibaiyaensis LOZ zone, M. lehneri PRZ zone, M. aragonensis/M. subbotinae CRZ zone, G. index HOZ zone, M. velascoensis PRZ zone, A. topilensis PRZ zone, H. alabamensis HOZ zone, A. pentacamerata PRZ zone, G. nuttalli LOZ zone
• Geomagnetic Polarity Chrons: C22 chron, C21 chron, C19 chron, C16 chron, C13 chron, C18 chron, C23 chron, C24 chron, C17 chron, C20 chron, C15 chron
• Cretaceous-Cenozoic of New Zealand: Kaiatan age, Waipawan age, Mangaorapan age, Dannevirke epoch, Runangan age, Arnold epoch, Whaingaroan age, Porangan age, Heretaungan age, Landon epoch, Bortonian age

This interval is used in the definition of 1140 collections

A total of 16382 collections with 158725 occurrences lie within this time span