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January 7, 2020
September 26, 2018
→‎External links: HTTP --> HTTPS [#1], replaced: http://www.nasa.gov → https://www.nasa.gov
m+1
July 13, 2016
April 17, 2008
December 17, 2007
December 16, 2007
→‎References: Change to more-specific category
+9
typo
mAdd alternative spelling. Remove redundant links now used in the body of the text.
-43
Flood geology view, wording changes.
+919
Wikilink other periods, and remove one that's actually part of the Carbiniferous (at least according to my source)
-3
Some rearrangement, altered wording, and put list into table to prevent wrapping around picture.
+70