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                              Priabonian ICS Stage
                             (Jacksonian, Runangan)
 
                      From 37.2 +/- 0.1 To 33.9 +/- 0.1 Ma
 
  Start Defined By:  Near lowest occurrence of calcareous nannofossil 
     Chiasmolithus oamaruensis (base Zone NP18).
  End Defined By:  Planktonic foraminifer, extinction of Hantkenina.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  Australian Stage:     Johannian  (52 - 36)
  Australian Stage:     Aldingian  (36 - 33)
  Californian Stage:    Narizian   (48 - 35)
  Californian Stage:    Refugian   (35 - 33.5)
  North American Stage: Duchesnean (40 - 37)
  North American Stage: Chadronian (37 - 33.5)
 
 -- A Substage of --
  Eon:              Phanerozoic (542 - -5.5012e-005)
  Era:              Cenozoic    (65.5 - -5.5012e-005)
  Period:           Paleogene   (65.5 - 23.03)
  Epoch:            Eocene      (55.8 - 33.9)
  Sub-Epoch:        Late Eocene (37.2 - 33.9)
  Informal Sub-era: Tertiary    (65.5 - 1.806)
 
 -- Preceeded By --
  Sub-Epoch:         Middle Eocene (48.6 - 37.2)
  ICS Stage:         Bartonian     (40.4 - 37.2)
  New Zealand Stage: Kiaitan       (40 - 37.2)
 
 -- Followed By --
  Epoch:             Oligocene       (33.9 - 23.03)
  Sub-Epoch:         Early Oligocene (33.9 - 28.4)
  ICS Stage:         Rupelian        (33.9 - 28.4)
  New Zealand Stage: Whaingaroan     (33.9 - 28)
 
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