GSA Geologic Time Scale
The time scale printed in April/May 2009 GSA Today contained a spelling error (under ORDOVICIAN: HIMANTIAN should be HIRNANTIAN). This page contains the corrected version.
[ read about the changes | view printable PDF ]
Note that the authors are still accepting comments on the overall content of time scale. Offer your comments or join in the discussion on GSA's Facebook page.
updated 8 April 2009
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