GeoWhen Database  

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                                Phanerozoic Eon
 
                   From 542 +/- 0.3 To -5.5012e-005 +/- 0 Ma
 
  Start Defined By:  Trace fossil, lowest occurrence of Treptichnus (Phycodes) 
     pedum.  Near base of negative carbon-isotope excursion.
  End Defined By:  Today (in Myr before 1950)
 
  Start Based On:  Amthor et. al., "Extinction of Cloudinia and Namacalathus at 
     the Precambrian-Cambrian boundary in Oman", _Geology_, v. 31, p. 431-434, 
     2003.
 
 -- Preceeded By --
  Time:                 Precambrian    (4567.17 - 542)
  Eon:                  Proterozoic    (2500 - 542)
  Era:                  Neoproterozoic (1000 - 542)
  Period:               Ediacaran      (630 - 542)
  Australian Stage:     Adelaidean     (1300 - 542)
  Chinese Stage:        Sinian         (800 - 542)
  General Stage:        Vendian        (650 - 542)
  General Stage:        Poundian       (570 - 542)
  North American Stage: Hadrynian      (850 - 542)
  South African Stage:  Namibian       (900 - 542)
 
 -- Contains the Following Eras --
  Era: Paleozoic (542 - 251)
  Era: Mesozoic  (251 - 65.5)
  Era: Cenozoic  (65.5 - -5.5012e-005)
 

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.