20.44 - 15.98 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. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

There are intervals in 9 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Miocene epoch
• Cenozoic Subepochs: Early Miocene subepoch
• European Faunal Units: Orleanian subage, Agenian subage
• European Faunal Zones: MN 2 zone, MN 3 zone, MN 4 zone
• Neogene Mammal Ages of China: Shanwangian age, Xiejiaan age
• North American Land Mammal Ages: Barstovian age, Hemingfordian age, Arikareean age
• North American Mammal Subages/Zones: Harrisonian subage, early Late Arikareean subage, Early Barstovian subage, early Early Arikareean subage, Late Hemingfordian subage, Early Hemingfordian subage, late Early Arikareean subage, late Late Arikareean subage, early Late Barstovian subage, late Late Barstovian subage
• South American Land Mammal Ages: Friasian age, Santacrucian age, Colhuehuapian age
• Cretaceous-Cenozoic of New Zealand: Altonian age, Otaian age, Pareora epoch

This interval is used in the definition of 1648 collections

A total of 3889 collections with 38778 occurrences lie within this time span