Re: CROCODYLOMORPH ENDOTHERMY

["Nicholas J. Pharris" <pharrinj@PLU.edu>]

On Thu, 25 Jan 1996, Rob Meyerson wrote:

> >"Returned to ectothermy"? As far as I know, all crurotarsan thecodontians
> >were always ectotherms. But with four-chambered hearts.
> 
> But....
> 
> A four-chambered heart is a very efficent structure.  Since it has been my
> observation that extreme efficency is an endotherm feature, couldn't we 
> conclude
> that thecodontians were endotherms?
> 
> Besides, how could they have out-competed therapsids (largely considered to be
> endotherms) if thecodonts were ectotherms?
> 

Exactly my point!  Gosh it's nice when people just spontaneously see 
things your way!  :-)

> Rob
> 
> ***
> "Don't panic!"


Nick Pharris
Pacific Lutheran University
Tacoma, WA 98447
(206)535-8204
PharriNJ@PLU.edu

"If you can't convince them, confuse them." -- Harry S. Truman