Re: New refs (long) cont. (short)

["Tim Williams" <twilliams_alpha@hotmail.com>]

DinoBoyGraphics@aol.com wrote:

> Surely you aren't referring to the amount of morphological diversity?  It 
> far exceeds that of dinosaurs.  There are no brachiating dinosaurs, no 
> cetacean analogs, no sea
> otter analogs.

The same can be said for the entire Archosauria - which, AFAIK, all conform 
to the same reproductive method (laying eggs).  Yet, we *know* that this 
group includes both modern ectotherms (crocs) and endotherms (birds).

Your argument is this:

(1) Placentals display a great deal of morphological diversity, and all are 
true endotherms.

(2) Therefore... Dinosaurs, which display less morphological diversity than 
placentals, cannot have shown any metabolic diversity.

This is not a scientific argument.




Tim

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