GeoWhen Database  

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files

  
                            Ryzanian Regional Stage
 
                              From 142 To 136.5 Ma
 
  Start Based On:  Gradstein and Ogg, "A Phanerozoic time scale", _Episodes_, 
     v.19, no.1&2., 1996.
  End Based On:  Gradstein and Ogg, "A Phanerozoic time scale", _Episodes_, 
     v.19, no.1&2., 1996.
 
 -- Overlaps With --
  ICS Stage: Berriasian  (145.5 - 140.2)
  ICS Stage: Valanginian (140.2 - 136.4)
 
 -- 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)
  European Epoch:       Neocomian        (145.5 - 130)
  Japanese Stage:       Kochian          (145.5 - 136.4)
  New Zealand Stage:    Mokoiwian        (145.5 - 119)
  North American Stage: Coahulian        (145.5 - 127)
 
 -- Preceeded By --
  Regional Stage: Volgian     (150.8 - 142)
  Regional Stage: Portlandian (146 - 142)
 

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.