GeoWhen Database  

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files

  
                                  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)
 

This page was automatically generated from the GeoWhen database (version 1.1.0).  Please read the introduction regarding the accuracy and reliability of this information.  Comments, corrections, and additions can be sent to geowhen@robertrohde.com.  References to published academic literature are preferred.

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files


2003-2005 GeoWhen Database
Prepared By Robert A. Rohde


This page was last updated on Tuesday, January 18, 2005.