37 - 33.9 Ma

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

• A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 view

There are intervals in 7 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Eocene epoch, Priabonian age
• Cenozoic Subepochs: Late Eocene subepoch
• Mammal Paleogene Zones: MP 18 zone, MP 19 zone, MP 17B zone, MP 17A zone, MP 20 zone
• Paleogene Mammal Ages of Asia: Houldjinian age, Ulangochuian age, Ergilian age
• North American Mammal Subages/Zones: Early Chadronian subage, Middle Chadronian subage, Late Chadronian subage
• South American Land Mammal Ages: Divisaderan age, Tinguirirican age
• Cretaceous-Cenozoic of New Zealand: Whaingaroan age, Kaiatan age, Runangan age, Arnold epoch, Landon epoch

This interval is used in the definition of 278 collections

A total of 2891 collections with 32111 occurrences lie within this time span