Re: ?Evolutionary cause for oxygen peak ~50 Myrs. ago?

Thanks. However, I'm pretty sure that no snowball-earth occurred in
the time interval from ~201 Myr to ~50 Myr ago. I'll keep on
searching for info. I suppose it might even
be something as indirect as the impact of
giant reptiles which, in the mesozoic, would have severly impacted the
forests they lived in, similarly to the impact of elephants today on
their environment. Their absence in the cenozoic might arguably have
allowed the establishment
of super-forests which might have injected
massive amounts of O2 into the atmo-
sphere. I'm probably way off, considering
the greater importance of ocean plankton
in the O2/CO2 budget.


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