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                                Devonian Period
 
                      From 416 +/- 2.8 To 359.2 +/- 2.5 Ma
 
  Start Defined By:  Graptolite, lowest occurrence of Monograptus uniformis.
  End Defined By:  Conodont, above lowest occurrence of Siphonodella sulcata.
 
  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:               Silurian      (443.7 - 416)
  Epoch:                Late Silurian (422.9 - 416)
  Sub-Epoch:            Pridoli       (418.7 - 416)
  Australian Stage:     Melbournian   (428.2 - 416)
  North American Stage: Cayugan       (421.3 - 416)
 
 -- Followed By --
  Period:               Carboniferous       (359.2 - 299)
  Epoch:                Mississippian       (359.2 - 318.1)
  Sub-Epoch:            Early Mississippian (359.2 - 345.3)
  ICS Stage:            Tournaisian         (359.2 - 345.3)
  Chinese Stage:        Shaodongian         (359.2 - 349.5)
  European Epoch:       Dinantian           (359.2 - 326.4)
  North American Stage: Kinderhookian       (359.2 - 348)
  Regional Stage:       Hastarian           (359.2 - 348)
 
 -- Contains the Following Epochs --
  Epoch: Early Devonian  (416 - 397.5)
  Epoch: Middle Devonian (397.5 - 385.3)
  Epoch: Late Devonian   (385.3 - 359.2)
 

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.