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Re: SPECULATION: pterosaur extinction versus bird survival
Demtrios Vital wrote:
"Pterosaurs also had a less efficient breathing system than
Yeah, [pterosaurs] had an efficient breathing system--but notice I said
efficient...than birds." I say this for several reasons. One is the neck
itself. Pterosaurs have notoriously small bodies and very long necks."
Have you considered the efficiency of the respiratory systems in mammals and
reptiles? If you hypothesis about pterosaur extinction is correlated with
decreasing levels of O2, why would the mammals and reptiles make it through
the K/T? Both groups have much less efficient respiratory systems than
birds and (presumably?) pterosaurs (although we don't know for sure).
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