GeoWhen Database  

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                              Sinemurian ICS Stage
 
                      From 196.5 +/- 1 To 189.6 +/- 1.5 Ma
 
  Start Defined By:  Ammonite, lowest occurrence of arietitid genera Vermiceras 
     and Metophioceras.
  End Defined By:  Ammonite, lowest occurrences of Bifericeras donovani and of 
     genera Apoderoceras and Gleviceras.
 
  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:  East Quantoxead, Watchet, West Somerset,
      SW England, UK
 
 -- A Substage of --
  Eon:               Phanerozoic    (542 - -5.5012e-005)
  Era:               Mesozoic       (251 - 65.5)
  Period:            Jurassic       (199.6 - 145.5)
  Epoch:             Early Jurassic (199.6 - 175.6)
  New Zealand Stage: Aratauran      (199.6 - 188)
 
 -- Preceeded By --
  ICS Stage: Hettangian (199.6 - 196.5)
 
 -- Followed By --
  ICS Stage: Pliensbachian (189.6 - 183)
 
 -- Contains the Following Stages --
  Regional Stage: Lotharingian (193.3 - 189.6)
 

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.