Posted on 12/26/2011 1:07:37 PM PST by decimon
I wish the article had included a graph showing the 6 episodes of climate/fauna change. I’ll bet one of them was around 34 million years ago. For that one there was definite cause: the great meteors in the Chesapeake and in Russia (Popogai sp?) which left 60 mile diameter craters and killed substantial numbers of animal groups.
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