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                              Callovian ICS Stage
                                  (Dreussian)
 
                       From 164.7 +/- 4 To 161.2 +/- 4 Ma
 
  Start Defined By:  Ammonite, lowest occurrence of the genus Kepplerites 
     (Kosmoceratidae).  (Defines base of Macrocephalites herveyi Zone in 
     sub-Boreal province of Great Britain to southwest Germany.)
  End Defined By:  Ammonite, Brightia thuouxensis Horizon at base of the 
     Cardioceras scarburgense Subzone (Quenstedtoceras mariae Zone).
 
  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)
  Era:               Mesozoic        (251 - 65.5)
  Period:            Jurassic        (199.6 - 145.5)
  Epoch:             Middle Jurassic (175.6 - 161.2)
  Chinese Stage:     Shaximioan      (167 - 161.2)
  New Zealand Stage: Temaikan        (169 - 161.2)
 
 -- Preceeded By --
  ICS Stage: Bathonian (167.7 - 164.7)
 
 -- Followed By --
  Epoch:         Late Jurassic (161.2 - 145.5)
  ICS Stage:     Oxfordian     (161.2 - 155.7)
  Chinese Stage: Suiningian    (161.2 - 149)
 

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.