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

This interval is used in the definition of 1139 collections

A total of 16346 collections with 158561 occurrences lie within this time span