GeoWhen Database  

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files

  
                            Yujianian Chinese Stage
 
                           From 410 To 407 +/- 2.8 Ma
 
  End Defined By:  Conodont, lowest occurrence of Polygnathus kitabicus (= Po. 
     dehiscens).
 
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- A Substage of --
  Eon:                  Phanerozoic    (542 - -5.5012e-005)
  Era:                  Paleozoic      (542 - 251)
  Period:               Devonian       (416 - 359.2)
  Epoch:                Early Devonian (416 - 397.5)
  ICS Stage:            Praghian       (411.2 - 407)
  North American Stage: Ulsterian      (416 - 391.8)
 
 -- Preceeded By --
  Chinese Stage: Nagaolingian (413 - 410)
 
 -- Followed By --
  ICS Stage: Emsian (407 - 397.5)
 

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.