Cretaceous Period
From 145.5 +/- 4 To 65.5 +/- 0.3 Ma
Start Defined By: Maybe near lowest occurrence of ammonite Berriasella
jacobi.
End Defined By: Iridium Anomaly. Associated with a major extinction horizon
(foraminifers, calcareous nannofossils, dinosaurs, etc.)
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Regional Stage: Volgian (150.8 - 142)
Regional Stage: Portlandian (146 - 142)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Mesozoic (251 - 65.5)
-- Preceeded By --
Period: Jurassic (199.6 - 145.5)
Epoch: Late Jurassic (161.2 - 145.5)
ICS Stage: Tithonian (150.8 - 145.5)
Chinese Stage: Penglaizhenian (149 - 145.5)
New Zealand Stage: Puaroan (150 - 145.5)
-- Followed By --
Era: Cenozoic (65.5 - -5.5012e-005)
Period: Paleogene (65.5 - 23.03)
Epoch: Paleocene (65.5 - 55.8)
Sub-Epoch: Early Paleocene (65.5 - 61.7)
ICS Stage: Danian (65.5 - 61.7)
Informal Sub-era: Tertiary (65.5 - 1.806)
New Zealand Stage: Teurian (65.5 - 56.5)
North American Stage: Puercan (65.5 - 62.5)
-- Contains the Following Epochs --
Epoch: Early Cretaceous (145.5 - 99.6)
Epoch: Late Cretaceous (99.6 - 65.5)
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