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                                 Permian Period
 
                       From 299 +/- 0.8 To 251 +/- 0.4 Ma
 
  Start Defined By:  Conodont, lowest occurrence of Streptognathodus isolatus 
     within the S. "wabaunsensis" conodont chronocline.  6 m higher is lowest 
     fusilinid foraminifer Sphaeroschwagerina.
  End Defined By:  Conodont, lowest occurrence of Hindeodus parvus; termination 
     of major negative carbon-isotope excursion.  About 1 myr after peak of 
     Late Permian extinctions.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- A Substage of --
  Eon: Phanerozoic (542 - -5.5012e-005)
  Era: Paleozoic   (542 - 251)
 
 -- 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 --
  Era:            Mesozoic       (251 - 65.5)
  Period:         Triassic       (251 - 199.6)
  Epoch:          Early Triassic (251 - 245)
  ICS Stage:      Induan         (251 - 249.7)
  Regional Stage: Griesbachian   (251 - 250.4)
 
 -- Contains the Following Epochs --
  Epoch: Early Permian  (299 - 270.6)
  Epoch: Middle Permian (270.6 - 260.4)
  Epoch: Late Permian   (260.4 - 251)
 

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.