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                              Bashkirian ICS Stage
                                   (Morrowan)
 
                     From 318.1 +/- 1.3 To 311.7 +/- 1.1 Ma
 
  Start Defined By:  Conodont, lowest occurrence of Declinognathodus 
     nodiliferus s.l.
  End Defined By:  Near lowest occurrences of Declinognathodus donetzianus and/
     or Idiognathoides postsulcatus conodont species, and fusulinid species 
     Aljutovella aljutovica.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
  Global Stratotype Section and Point:  Battleship Wash Formation, Arrow Canyon,
      southern Nevada, USA
 
 -- Overlaps With --
  Chinese Stage:  Dalanian    (313 - 310)
  European Stage: Namurian    (326.4 - 315)
  European Stage: Westphalian (315 - 306.5)
 
 -- A Substage of --
  Eon:            Phanerozoic         (542 - -5.5012e-005)
  Era:            Paleozoic           (542 - 251)
  Period:         Carboniferous       (359.2 - 299)
  Epoch:          Pennsylvanian       (318.1 - 299)
  Sub-Epoch:      Early Pennsylvanian (318.1 - 311.7)
  European Epoch: Silesian            (326.4 - 299)
 
 -- Preceeded By --
  Epoch:                Mississippian      (359.2 - 318.1)
  Sub-Epoch:            Late Mississippian (326.4 - 318.1)
  ICS Stage:            Serpukhovian       (326.4 - 318.1)
  Chinese Stage:        Dewuan             (333 - 318.1)
  North American Stage: Chesterian         (333 - 318.1)
  Regional Stage:       Alportian          (324.5 - 318.1)
 
 -- Followed By --
  Sub-Epoch:            Middle Pennsylvanian (311.7 - 306.5)
  ICS Stage:            Moscovian            (311.7 - 306.5)
  North American Stage: Atokan/Derryan       (311.7 - 308)
  Russian Stage:        Vereiskian           (311.7 - 309.2)
 
 -- Contains the Following Stages --
  Chinese Stage:  Huashibanian    (318.1 - 313)
  Regional Stage: Kinderscoutian  (318.1 - 317)
  Regional Stage: Marsdenian      (317 - 315.5)
  Regional Stage: Yeadonian       (315.5 - 314.5)
  Russian Stage:  Cheremshanskian (314.5 - 313.4)
  Russian Stage:  Melekesskian    (313.4 - 311.7)
 

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.