Hi, I've removed some of the material and moved the rest to a new section on "Impact events in Earth's early history" as they were nothing to do with mass extinctions. I hope you feel that's an improvement. As with the templated message above, removing anything without a descriptive edit summary is likely to lead to reversion, even if it is soundly based on policy (as yours was). Mikenorton (talk) 10:21, 7 April 2013 (UTC)
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