23.04 - 15.98 Ma

The definition of this interval in the timescale Cenozoic Subepochs is taken from the following source:

• W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view

There are intervals in 12 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Burdigalian age, Aquitanian age, Miocene epoch
• European Faunal Units: Orleanian subage, Agenian subage
• European Faunal Zones: MN 1 zone, MN 4 zone, MN 2 zone, MN 3 zone
• Neogene Mammal Ages of China: Xiejiaan age, Shanwangian age
• North American Land Mammal Ages: Hemingfordian age, Arikareean age, Barstovian age
• North American Mammal Subages/Zones: Late Hemingfordian subage, early Early Arikareean subage, late Late Arikareean subage, Harrisonian subage, late Late Barstovian subage, late Early Arikareean subage, Early Barstovian subage, early Late Barstovian subage, early Late Arikareean subage, Early Hemingfordian subage
• South American Land Mammal Ages: Colhuehuapian age, Santacrucian age, Friasian age, Deseadan age
• Calcareous Nannoplankton Zones: NN1 zone, NN3 zone, NN2 zone, NN4 zone
• Planktic Foraminiferal Zones: G. bisphericus PRZ zone, Globigerinatella sp./C. dissimilis CRZ zone, G. binaiensis PRZ zone, P. sicana LOZ zone, P. kugleri TRZ zone, P. pseudokugleri LOZ zone
• Neogene North Pacific Diatom Biochronology: Thalassiosira praefraga zone, Crucidenticula sawamurae - Thalassiosira fraga zone
• Geomagnetic Polarity Chrons: C6 chron, C5C chron, C5B chron, C5D chron, C5E chron, C6B chron, C6C chron, C6AA chron, C6A chron
• Cretaceous-Cenozoic of New Zealand: Altonian age, Waitakian age, Otaian age, Landon epoch, Pareora epoch

This interval is used in the definition of 2566 collections

A total of 6515 collections with 65504 occurrences lie within this time span