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: Middle Eocene subepoch, Early Eocene subepoch, Late Eocene subepoch
• Mammal Paleogene Zones: MP 12 zone, MP 17B zone, MP 13 zone, MP 19 zone, MP 16 zone, MP 20 zone, MP 18 zone, MP 17A zone, MP 14 zone, MP 7 zone, MP 15 zone, MP 10 zone, MP 11 zone, MP 8 + 9 zone
• Paleogene Mammal Ages of Asia: Houldjinian age, Ergilian age, Ulangochuian age, Bumbanian age, Irdinmanhan age, Sharamurunian age, Arshantan age
• North American Land Mammal Ages: Clarkforkian age, Chadronian age, Uintan age, Duchesnean age, Bridgerian age, Wasatchian age
• North American Mammal Subages/Zones: Cf1 zone, Early Uintan subage, Sandcouleean subage, Gardnerbuttian subage, Graybullian subage, Lostcabinian subage, Blacksforkian subage, Lysitean subage, Middle Chadronian subage, Twinbuttean subage, Cf2 zone, Early Chadronian subage, Late Chadronian subage, Cf3 zone, Late Uintan subage
• South American Land Mammal Ages: Casamayoran age, Tinguirirican age, Mustersan age, Divisaderan age
• Calcareous Nannoplankton Zones: NP18 zone, NP12 zone, NP19 zone, NP14 zone, NP10 zone, NP15 zone, NP13 zone, NP11 zone, NP16 zone, NP21 zone, NP17 zone, NP20 zone, NP19-20 zone
• Planktic Foraminiferal Zones: P. wilcoxensis/M. velascoensis CRZ zone, M. velascoensis PRZ zone, M. lehneri PRZ zone, M. formosa LOZ zone, M. marginodentata PRZ zone, G. pseudomenardii TRZ zone, A. topilensis PRZ zone, O. beckmanni TRZ zone, A. sibaiyaensis LOZ zone, G. semiinvoluta HOZ zone, G. kugleri/M. aragonensis CRZ zone, M. crassatus HOZ zone, H. alabamensis HOZ zone, G. index HOZ zone, A. cuneicamerata LOZ zone, A. pentacamerata PRZ zone, G. nuttalli LOZ zone, M. aragonensis/M. subbotinae CRZ zone
• Geomagnetic Polarity Chrons: C15 chron, C23 chron, C13 chron, C18 chron, C20 chron, C24 chron, C19 chron, C21 chron, C22 chron, C17 chron, C16 chron
• Cretaceous-Cenozoic of New Zealand: Waipawan age, Porangan age, Mangaorapan age, Heretaungan age, Landon epoch, Runangan age, Dannevirke epoch, Bortonian age, Whaingaroan age, Kaiatan age, Arnold epoch

This interval is used in the definition of 775 collections

A total of 14131 collections with 133177 occurrences lie within this time span