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                              Late Cambrian Epoch
          (Upper Cambrian, Merioneth, Furongian, Croixian, Potsdamian)
 
                       From 501 +/- 2 To 488.3 +/- 1.7 Ma
 
  Start Defined By:  Trilobite, lowest occurrence of agnostoid Glyptagnostus 
     reticulatus.  Coincides with base of large positive carbon-isotope 
     excursion.
  End 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_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  North American Stage: Marjuman (504 - 494.5)
  North American Stage: Ibexian  (491 - 471.8)
 
 -- A Substage of --
  Eon:    Phanerozoic (542 - -5.5012e-005)
  Era:    Paleozoic   (542 - 251)
  Period: Cambrian    (542 - 488.3)
 
 -- Preceeded By --
  Epoch:                   Middle Cambrian (513 - 501)
  Australian Stage:        Boomerangian    (504 - 501)
  Chinese Stage:           Zhungxian       (505 - 501)
  Russian-Kazakhian Stage: Mayan           (502 - 501)
 
 -- Followed By --
  Period:           Ordovician       (488.3 - 443.7)
  Epoch:            Early Ordovician (488.3 - 471.8)
  ICS Stage:        Tremadocian      (488.3 - 478.6)
  Australian Stage: Datsonian        (488.3 - 485)
  European Stage:   Cressagian       (488.3 - 486)
 
 -- Contains the Following Stages --
  ICS Stage:               Paibian      (501 - 496)
  Australian Stage:        Payntonian   (491 - 488.3)
  Australian Stage:        Mindyallan   (501 - 497)
  Australian Stage:        Idamean      (497 - 494)
  North American Stage:    Steptoan     (494.5 - 493)
  North American Stage:    Sunwaptan    (493 - 491)
  Regional Stage:          Maentwrogian (501 - 496.8)
  Regional Stage:          Festiniogian (496.8 - 492.5)
  Regional Stage:          Dolgellian   (492.5 - 488.3)
  Russian-Kazakhian Stage: Ayusokkanian (501 - 494.5)
  Russian-Kazakhian Stage: Sakian       (494.5 - 493)
  Russian-Kazakhian Stage: Aksayan      (493 - 491.5)
  Russian-Kazakhian Stage: Batyrbayan   (491.5 - 488.3)
 

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

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2003-2005 GeoWhen Database
Prepared By Robert A. Rohde


This page was last updated on Tuesday, January 18, 2005.