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                              Tithonian ICS Stage
 
                       From 150.8 +/- 4 To 145.5 +/- 4 Ma
 
  Start Defined By:  Near base of Hybonoticeras hybonotum ammonite zone and 
     lowest occurrence of Gravesia genus, and the base of magnetic polarity 
     chronozone M22An.
  End Defined By:  Maybe near lowest occurrence of ammonite Berriasella jacobi.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  Chinese Stage:     Suiningian  (161.2 - 149)
  New Zealand Stage: Ohauan      (152 - 150)
  Regional Stage:    Portlandian (146 - 142)
 
 -- A Substage of --
  Eon:            Phanerozoic   (542 - -5.5012e-005)
  Era:            Mesozoic      (251 - 65.5)
  Period:         Jurassic      (199.6 - 145.5)
  Epoch:          Late Jurassic (161.2 - 145.5)
  Regional Stage: Volgian       (150.8 - 142)
 
 -- Preceeded By --
  ICS Stage: Kimmeridgian (155.7 - 150.8)
 
 -- Followed By --
  Period:               Cretaceous       (145.5 - 65.5)
  Epoch:                Early Cretaceous (145.5 - 99.6)
  ICS Stage:            Berriasian       (145.5 - 140.2)
  European Epoch:       Neocomian        (145.5 - 130)
  Japanese Stage:       Kochian          (145.5 - 136.4)
  New Zealand Stage:    Mokoiwian        (145.5 - 119)
  North American Stage: Coahulian        (145.5 - 127)
 
 -- Contains the Following Stages --
  Chinese Stage:     Penglaizhenian (149 - 145.5)
  New Zealand Stage: Puaroan        (150 - 145.5)
 

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.