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Re: RE: Warm Blooded vs. Cold Blooded
From: email@example.com (Paul Willis)
> > I measure the skulls and mouths of sauropods and big
> >mammals, find there is little difference in gross cropping capacity.
> >So were is the assumption.
> OK, I am just thinking of a couple off the top of my head,
> ... but try these:
> 1 differences in jaw mechanics relating to rate of cropping.
The differences I am aware of might actually favor the *sauropods*.
The rake-like structure of the teeth may well have allowed browsing
by a simple sweeping motion of the head.
> 2 differences in ability to orally process cropped material
Now add, ability to process food in a crop.
I rather think these two are pretty much a wash. Chewing takes time
away from cropping. Grinding in a crop does not.
> 3 differences in quality of food
Wide mouthed browser *all* eat low-quaility food. It is only narrow-
mouthed forms that select high-quality food. In terms of quality I
do not see much difference between the leaves of a "leafy" conifer
like Sequoia or Araucaria and a leptophyll scelrophyllous angiosperm.
> 4 differences in requirements of food due to differences in metabolic
He wasn't commenting on this - only on raw *phyisical* processing
> Give me time, I could come up with more. The point is that the metabolic
> requirements of sauropods can not be known and drawing simple correlations
> between two dimentions.
He wasn't trying to determmine the metabolic requirement, he was only
trying to say they were not *limited* by inability to process enough
The peace of God be with you.