57.5 - 56 Ma

The definition of this interval in the timescale North American Land Mammal Ages is taken from the following source:

• R. L. Anemone, M. F. Jones, J. Van Regenmorter and K. C. Beard. 2024. A latest Paleocene mammal fauna from the Great Divide Basin in southern Wyoming and a revised biozonation of the Clarkforkian land mammal age. Journal of Vertebrate Paleontology view

There are intervals in 10 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Thanetian age, Paleocene epoch
• Cenozoic Subepochs: Late Paleocene subepoch
• Mammal Paleogene Zones: MP 6 zone
• Paleogene Mammal Ages of Asia: Gashatan age
• North American Mammal Subages/Zones: Cf2 zone, Cf3 zone, Cf1 zone
• South American Land Mammal Ages: Itaboraian age, Riochican age
• Calcareous Nannoplankton Zones: NP9 zone, NP8 zone
• Planktic Foraminiferal Zones: G. pseudomenardii TRZ zone
• Geomagnetic Polarity Chrons: C25 chron, C24 chron
• Cretaceous-Cenozoic of New Zealand: Teurian age, Dannevirke epoch

This interval is used in the definition of 320 collections

A total of 334 collections with 2277 occurrences lie within this time span