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

This interval is used in the definition of 1651 collections

A total of 3896 collections with 38831 occurrences lie within this time span