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Re: Extinction

My apologies for poor expression.  My data referred to a 30% _survival_ rate.
I took out 30% of the slips and said they were the survivors.  Every 
clade had surviving species except on one of the ten extinctions when one 
(yellow) lost all its species.
 I believe you thought that it was probable that at least one species 
went out.  I don't think it is.