56.2 - 54.9 Ma

The definition of this interval in the timescale North American Mammal Subages/Zones is taken from the following source:

• M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view

There are intervals in 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Thanetian age, Ypresian age, Eocene epoch, Paleocene epoch
• Cenozoic Subepochs: Late Paleocene subepoch, Early Eocene subepoch
• Mammal Paleogene Zones: MP 10 zone, MP 8 + 9 zone, MP 1 - 5 zone, MP 6 zone, MP 7 zone
• Paleogene Mammal Ages of Asia: Sharamurunian age, Gashatan age, Irdinmanhan age, Arshantan age, Bumbanian age
• North American Land Mammal Ages: Clarkforkian age
• North American Mammal Subages/Zones: Cf1 zone, Cf3 zone
• South American Land Mammal Ages: Riochican age, Casamayoran age
• Cretaceous-Cenozoic of New Zealand: Teurian age, Dannevirke epoch, Waipawan age

This interval is used in the definition of 2 collections

A total of 322 collections with 2193 occurrences lie within this time span