ammonites

Late/Upper Oligocene subepoch

General information
Lower boundary: equal to 28.4 Ma (based on Chattian)
Upper boundary: equal to 23.03 Ma (based on Chattian)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Paleogene
Epoch: Oligocene
Stage: Chattian
10 million year bin: Cenozoic 4
Contained within
  • Deseadan
  • Arikareean
  • late Late Arikareean
  • early Late Arikareean
  • late Early Arikareean
  • early Early Arikareean
  • Landon
  • Tertiary
  • Cenozoic
  • Phanerozoic
    • Previous intervals
  • Early/Lower Oligocene
  • Rupelian
  • Kekeamuan
  • MP 24
  • MP 23
  • MP 22
  • MP 21
    • Next intervals
  • Neogene
  • Miocene
  • Early/Lower Miocene
  • Aquitanian
  • Agenian
  • MN 1
  • Xiejiaan
    • Equivalent to
  • Chattian
    • Contains
  • Duntroonian, MP 26, MP 27, MP 28, MP 29, MP 30, Monroecreekian, Tabenbulakian
    • Shares top with
  • Hsandagolian, MP 25, Oligocene, Paleogene
    • Overlaps with
  • Harrisonian (24.8 to 20.43 Ma)
  • Waitakian (25.2 to 21.7 Ma)
  • Geringian (30.8 to 26.3 Ma)
  • Whaingaroan (34.3 to 27.3 Ma)
    • Appears in scales
  • Gradstein 6: Cenozoic Subepochs (2004)
  • Harland 5: Subepochs (1990)

    • Interval name: