Mesozoic Era
(Secondary)
From 251 +/- 0.4 To 65.5 +/- 0.3 Ma
Start Defined By: Conodont, lowest occurrence of Hindeodus parvus;
termination of major negative carbon-isotope excursion. About 1 myr after
peak of Late Permian extinctions.
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_
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
-- Preceeded By --
Era: Paleozoic (542 - 251)
Period: Permian (299 - 251)
Epoch: Late Permian (260.4 - 251)
ICS Stage: Changhsingian (253.8 - 251)
New Zealand Stage: Makabewan (253.8 - 251)
North American Stage: Ochoan (260.4 - 251)
Regional Stage: Thuringian (270.6 - 251)
-- 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 Periods --
Period: Triassic (251 - 199.6)
Period: Jurassic (199.6 - 145.5)
Period: Cretaceous (145.5 - 65.5)
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