Paleogene Period
From 65.5 +/- 0.3 To 23.03 +/- 0.05 Ma
Start Defined By: Iridium Anomaly. Associated with a major extinction
horizon (foraminifers, calcareous nannofossils, dinosaurs, etc.)
End Defined By: Base of magnetic polarity chronozone C6Cn.2n; lowest
occurrence of planktonic foraminifer Paragloborotalia kugleri; near
extinction of calcareous nannofossil Reticulofenestra bisecta (base Zone
NN1).
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: Longfordian (27.5 - 16.5)
Californian Stage: Zemorrian (33.5 - 22)
North American Stage: Arikareean (30.5 - 19)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Cenozoic (65.5 - -5.5012e-005)
Informal Sub-era: Tertiary (65.5 - 1.806)
-- Preceeded By --
Era: Mesozoic (251 - 65.5)
Period: Cretaceous (145.5 - 65.5)
Epoch: Late Cretaceous (99.6 - 65.5)
ICS Stage: Maastrichtian (70.6 - 65.5)
European Epoch: Senonian (89.3 - 65.5)
Japanese Stage: Hetonian (77.1 - 65.5)
Regional Stage: Rognacian (68 - 65.5)
-- Followed By --
Period: Neogene (23.03 - -5.5012e-005)
Epoch: Miocene (23.03 - 5.332)
Sub-Epoch: Early Miocene (23.03 - 15.97)
ICS Stage: Aquitanian (23.03 - 20.43)
New Zealand Stage: Otaian (23.03 - 21)
-- Contains the Following Epochs --
Epoch: Paleocene (65.5 - 55.8)
Epoch: Eocene (55.8 - 33.9)
Epoch: Oligocene (33.9 - 23.03)
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