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                        Wolfcampian North American Stage
 
                           From 299 +/- 0.8 To 280 Ma
 
  Start Defined By:  Conodont, lowest occurrence of Streptognathodus isolatus 
     within the S. "wabaunsensis" conodont chronocline.  6 m higher is lowest 
     fusilinid foraminifer Sphaeroschwagerina.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  ICS Stage:         Artinskian (284.4 - 275.6)
  New Zealand Stage: Telfordian (289 - 278)
 
 -- A Substage of --
  Eon:    Phanerozoic   (542 - -5.5012e-005)
  Era:    Paleozoic     (542 - 251)
  Period: Permian       (299 - 251)
  Epoch:  Early Permian (299 - 270.6)
 
 -- Preceeded By --
  Period:               Carboniferous      (359.2 - 299)
  Epoch:                Pennsylvanian      (318.1 - 299)
  Sub-Epoch:            Late Pennsylvanian (306.5 - 299)
  ICS Stage:            Gzhelian           (303.9 - 299)
  Chinese Stage:        Mapingian          (310 - 299)
  European Epoch:       Silesian           (326.4 - 299)
  European Stage:       Stephanian         (306.5 - 299)
  North American Stage: Virgilian          (305 - 299)
  Russian Stage:        Noginskian         (300.5 - 299)
 
 -- Followed By --
  North American Stage: Leonardian (280 - 270.6)
 
 -- Contains the Following Stages --
  ICS Stage: Asselian  (299 - 294.6)
  ICS Stage: Sakmarian (294.6 - 284.4)
 

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.