29 - 21 Ma

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

• J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 view

There are intervals in 14 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Aquitanian age, Chattian age, Rupelian age, Miocene epoch, Oligocene epoch
• Cenozoic Subepochs: Late Oligocene subepoch, Early Oligocene subepoch, Early Miocene subepoch
• European Faunal Units: Agenian subage
• European Faunal Zones: MN 2 zone, MN 1 zone
• Mammal Paleogene Zones: MP 27 zone, MP 22 zone, MP 21 zone, MP 25 zone, MP 29 zone, MP 24 zone, MP 26 zone, MP 30 zone, MP 28 zone, MP 23 zone
• Neogene Mammal Ages of China: Xiejiaan age
• Paleogene Mammal Ages of Asia: Kekeamuan age, Tabenbulakian age, Hsandagolian age
• North American Land Mammal Ages: Arikareean age
• North American Mammal Subages/Zones: late Early Arikareean subage, late Late Arikareean subage, Geringian subage, early Late Arikareean subage, early Early Arikareean subage, Monroecreekian subage, Harrisonian subage
• Calcareous Nannoplankton Zones: NP24 zone, NP23 zone, NN2 zone, NN1 zone, NP25 zone
• Planktic Foraminiferal Zones: G. ciperoensis PRZ zone, P. pseudokugleri LOZ zone, G. angulisuturalis/C.cubensis CRZ zone, P. kugleri TRZ zone, G. binaiensis PRZ zone, P. opima HOZ zone
• Neogene North Pacific Diatom Biochronology: Thalassiosira praefraga zone
• Geomagnetic Polarity Chrons: C7A chron, C7 chron, C6B chron, C6A chron, C8 chron, C6AA chron, C6C chron, C10 chron, C9 chron
• Cretaceous-Cenozoic of New Zealand: Otaian age, Waitakian age, Pareora epoch, Landon epoch, Duntroonian age, Whaingaroan age

This interval is used in the definition of 90 collections

A total of 5202 collections with 43060 occurrences lie within this time span