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The articles seem to be about exactly the same thing. Rekov (talk) 14:30, 13 September 2009 (UTC)
I was just coming here to propose the same thing myself! There is some distinction - K. vallis is part of K. valles - but certainly no need for two articles. I'll tag for merger and do it in a bit. DanHobley (talk) 22:04, 6 August 2011 (UTC)