Clue: One billion years, in geology
One billion years, in geology is a crossword puzzle clue that we have spotted 14 times. There are related clues (shown below).
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Recent usage in crossword puzzles:
- Universal Crossword - Jan. 10, 2016
- Pat Sajak Code Letter - March 31, 2013
- Pat Sajak Code Letter - March 3, 2012
- Pat Sajak Code Letter - Aug. 8, 2011
- USA Today - May 16, 2011
- Pat Sajak Code Letter - May 1, 2010
- USA Today - Jan. 29, 2010
- USA Today - April 9, 2009
- USA Today - June 14, 2007
- Universal Crossword - May 7, 2006
- Universal Crossword - March 5, 2006
- Universal Crossword - July 5, 2001
- Universal Crossword - March 14, 2001
- New York Times - July 18, 1997
