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                               Bajocian ICS Stage
 
                      From 171.6 +/- 3 To 167.7 +/- 3.5 Ma
 
  Start Defined By:  Ammonite, lowest occurrence of the genus Hyperlioceras 
     (defines base of the Hyperlioceras discites Zone).
  End Defined By:  Ammonite, lowest occurrence of Parkinsonia (G.) convergens 
     (defines base of Zigzagiceras zigzag Zone).
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
  Global Stratotype Section and Point:  Cabo Mondego, western Portugal
 
 -- Overlaps With --
  New Zealand Stage: Uruoan   (188 - 169)
  New Zealand Stage: Temaikan (169 - 161.2)
 
 -- 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: Xintiangouan    (175.6 - 167)
 
 -- Preceeded By --
  ICS Stage: Aalenian (175.6 - 171.6)
 
 -- Followed By --
  ICS Stage: Bathonian (167.7 - 164.7)
 

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.