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                         Coahulian North American Stage
 
                           From 145.5 +/- 4 To 127 Ma
 
  Start Defined By:  Maybe near lowest occurrence of ammonite Berriasella 
     jacobi.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  ICS Stage:      Barremian   (130 - 125)
  European Epoch: Gallic      (130 - 89.3)
  Japanese Stage: Aritan      (136.4 - 125)
  Regional Stage: Volgian     (150.8 - 142)
  Regional Stage: Portlandian (146 - 142)
 
 -- A Substage of --
  Eon:               Phanerozoic      (542 - -5.5012e-005)
  Era:               Mesozoic         (251 - 65.5)
  Period:            Cretaceous       (145.5 - 65.5)
  Epoch:             Early Cretaceous (145.5 - 99.6)
  New Zealand Stage: Mokoiwian        (145.5 - 119)
 
 -- Preceeded By --
  Period:            Jurassic       (199.6 - 145.5)
  Epoch:             Late Jurassic  (161.2 - 145.5)
  ICS Stage:         Tithonian      (150.8 - 145.5)
  Chinese Stage:     Penglaizhenian (149 - 145.5)
  New Zealand Stage: Puaroan        (150 - 145.5)
 
 -- Followed By --
  North American Stage: Comanchean (127 - 99.6)
 
 -- Contains the Following Stages --
  ICS Stage:      Berriasian  (145.5 - 140.2)
  ICS Stage:      Valanginian (140.2 - 136.4)
  ICS Stage:      Hauterivian (136.4 - 130)
  European Epoch: Neocomian   (145.5 - 130)
  Japanese Stage: Kochian     (145.5 - 136.4)
  Regional Stage: Ryzanian    (142 - 136.5)
 

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.