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                               Rhaetian ICS Stage
 
                     From 203.6 +/- 1.5 To 199.6 +/- 0.6 Ma
 
  Start Defined By:  Near lowest occurrence of ammonite Cochlocera, conodonts 
     Misikella spp. and Epigondolella mosheri, and radiolarian Proparvicingula 
     moniliformis.
  End Defined By:  Near lowest occurrence of smooth Psiloceras planorbis 
     ammonite group.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  New Zealand Stage: Warepan (206 - 203)
 
 -- A Substage of --
  Eon:           Phanerozoic   (542 - -5.5012e-005)
  Era:           Mesozoic      (251 - 65.5)
  Period:        Triassic      (251 - 199.6)
  Epoch:         Late Triassic (228 - 199.6)
  Chinese Stage: Erqiaoan      (209 - 199.6)
 
 -- Preceeded By --
  ICS Stage:      Norian   (216.5 - 203.6)
  Regional Stage: Sevatian (211 - 203.6)
 
 -- Followed By --
  Period:            Jurassic       (199.6 - 145.5)
  Epoch:             Early Jurassic (199.6 - 175.6)
  ICS Stage:         Hettangian     (199.6 - 196.5)
  New Zealand Stage: Aratauran      (199.6 - 188)
 
 -- Contains the Following Stages --
  New Zealand Stage: Otapirian (203 - 199.6)
 

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.