35.9 - 28.9 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

The top and bottom ages have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

There are intervals in 7 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Rupelian age, Eocene epoch, Oligocene epoch, Priabonian age
• Cenozoic Subepochs: Early Oligocene subepoch, Late Eocene subepoch
• Mammal Paleogene Zones: MP 17A zone, MP 24 zone, MP 25 zone, MP 23 zone, MP 22 zone, MP 18 zone, MP 20 zone, MP 17B zone, MP 21 zone, MP 19 zone
• Paleogene Mammal Ages of Asia: Houldjinian age, Ulangochuian age, Kekeamuan age, Ergilian age, Hsandagolian age
• North American Land Mammal Ages: Arikareean age, Whitneyan age, Orellan age, Chadronian age
• North American Mammal Subages/Zones: early Early Arikareean subage, Early Chadronian subage, late Early Arikareean subage, Middle Chadronian subage, early Late Arikareean subage, late Late Arikareean subage, Geringian subage, Late Chadronian subage
• Cretaceous-Cenozoic of New Zealand: Landon epoch, Whaingaroan age, Arnold epoch, Runangan age

This interval is used in the definition of 5 collections

A total of 5082 collections with 51458 occurrences lie within this time span