ammonites

Early/Lower Oligocene subepoch

General information
Lower boundary: equal to 33.9 Ma (based on Rupelian)
Upper boundary: equal to 28.4 Ma (based on Rupelian)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Paleogene
Epoch: Oligocene
Stage: Rupelian
10 million year bin: Cenozoic 4
Contained within
  • Whaingaroan
  • Landon
  • Paleogene
  • Tertiary
  • Cenozoic
  • Phanerozoic
    • Previous intervals
  • Eocene
  • Late/Upper Eocene
  • Priabonian
  • Chadronian
  • Late/Upper Chadronian
  • Middle Chadronian
  • Early/Lower Chadronian
  • Houldjinian
  • Ergilian
  • Ulangochuian
  • MP 20
  • MP 19
  • MP 18
  • MP 17B
  • MP 17A
    • Next intervals
  • Late/Upper Oligocene
  • Chattian
  • Tabenbulakian
  • MP 30
  • MP 29
  • MP 28
  • MP 27
  • MP 26
    • Equivalent to
  • Rupelian
    • Contains
  • Kekeamuan, MP 21, MP 22, MP 23, MP 24, Whitneyan
    • Shares base with
  • Hsandagolian, MP 25, Oligocene, Orellan
    • Overlaps with
  • Deseadan (29.0 to 21.0 Ma)
  • Arikareean (30.8 to 20.43 Ma)
  • late Late Arikareean (30.8 to 20.43 Ma)
  • early Late Arikareean (30.8 to 20.43 Ma)
  • late Early Arikareean (30.8 to 20.43 Ma)
  • early Early Arikareean (30.8 to 20.43 Ma)
  • Geringian (30.8 to 26.3 Ma)
  • Tinguirirican (36.0 to 29.0 Ma)
    • Appears in scales
  • Gradstein 6: Cenozoic Subepochs (2004)
  • Harland 5: Subepochs (1990)

    • Interval name: