GeoWhen Database  

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                           Eildonian Australian Stage
 
                          From 433 To 428.2 +/- 2.3 Ma
 
  End Defined By:  Imprecise.  Between the base of acritarch biozone 5 and 
     extinction of conodont Pterospathodus amorphognathoides.  May be near base 
     of Cyrtograptus centrifugus graptolite zone.
 
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  Chinese Stage: Xiushanian (429 - 425.5)
 
 -- A Substage of --
  Eon:                  Phanerozoic    (542 - -5.5012e-005)
  Era:                  Paleozoic      (542 - 251)
  Period:               Silurian       (443.7 - 416)
  Epoch:                Early Silurian (443.7 - 422.9)
  Sub-Epoch:            Llandovery     (443.7 - 428.2)
  ICS Stage:            Telychian      (436 - 428.2)
  North American Stage: Niagaran       (438 - 421.3)
 
 -- Preceeded By --
  Australian Stage: Keiloran    (443.7 - 433)
  Chinese Stage:    Shinulanian (438 - 433)
 
 -- Followed By --
  Sub-Epoch:        Wenlock      (428.2 - 422.9)
  ICS Stage:        Sheinwoodian (428.2 - 426.2)
  Australian Stage: Melbournian  (428.2 - 416)
 
 -- Contains the Following Stages --
  Chinese Stage: Baishaean (433 - 429)
 

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.