quote:
Originally posted by blitz77:
This may be considered as further evidence against an early reducing atmosphere--because otherwise you would need some other organism to produce oxygen, and no other candidate has been put forward.
The article you linked-to in your post is discussing these other organisms.
Note that per the article cited, cyanobacteria are not the EARLIEST bacteria, but came along after the sulfer loving bacteria. It does not say that NO BACTERIA came before the cyanobacteria.
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