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                           Datsonian Australian Stage
 
                          From 488.3 +/- 1.7 To 485 Ma
 
  Start Defined By:  Conodont, lowest occurrence of Iapetognathus fluctivagus; 
     just above base of Cordylodus lindstromi conodont Zone.  Just below lowest 
     occurrence of planktonic graptolites.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  European Stage: Migneintian (486 - 478.6)
 
 -- A Substage of --
  Eon:                  Phanerozoic      (542 - -5.5012e-005)
  Era:                  Paleozoic        (542 - 251)
  Period:               Ordovician       (488.3 - 443.7)
  Epoch:                Early Ordovician (488.3 - 471.8)
  ICS Stage:            Tremadocian      (488.3 - 478.6)
  North American Stage: Ibexian          (491 - 471.8)
 
 -- Preceeded By --
  Period:                  Cambrian      (542 - 488.3)
  Epoch:                   Late Cambrian (501 - 488.3)
  Australian Stage:        Payntonian    (491 - 488.3)
  Regional Stage:          Dolgellian    (492.5 - 488.3)
  Russian-Kazakhian Stage: Batyrbayan    (491.5 - 488.3)
 
 -- Followed By --
  Australian Stage: Warendian/Lancefieldian (485 - 475)
  Australian Stage: Warendian               (485 - 478.6)
 
 -- Contains the Following Stages --
  European Stage: Cressagian (488.3 - 486)
 

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.