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                               Anisian ICS Stage
                                 (Guanlingian)
 
                        From 245 +/- 1.5 To 237 +/- 2 Ma
 
  Start Defined By:  Ammonite, near lowest occurrences of genera Japonites, 
     Paradanubites, and Paracrochordiceras; and of the conodont Chiosella 
     timorensis.
  End Defined By:  Alternate levels are near base of Reitzi, Secedensis, or 
     Curionii ammonite zone; near first occurrence of the conodont genus 
     Budurovignathus.
 
  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: Malakovian (248 - 243)
  New Zealand Stage: Etalian    (243 - 232)
 
 -- A Substage of --
  Eon:    Phanerozoic     (542 - -5.5012e-005)
  Era:    Mesozoic        (251 - 65.5)
  Period: Triassic        (251 - 199.6)
  Epoch:  Middle Triassic (245 - 228)
 
 -- Preceeded By --
  Epoch:          Early Triassic (251 - 245)
  ICS Stage:      Olenekian      (249.7 - 245)
  Regional Stage: Spathian       (247.4 - 245)
 
 -- Followed By --
  ICS Stage:      Ladinian  (237 - 228)
  Regional Stage: Fassanian (237 - 231.4)
 
 -- Contains the Following Stages --
  Regional Stage: Aegean    (245 - 243)
  Regional Stage: Bithynian (243 - 241)
  Regional Stage: Pelsonian (241 - 239)
  Regional Stage: Illyrian  (239 - 237)
 

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.