Fwd: CROCODYLOMORPH ENDOTHERMY

[Dinogeorge@aol.com]

---------------------
Forwarded message:
Subj:    Re: CROCODYLOMORPH ENDOTHERMY
Date:    96-01-26 11:50:53 EST
From:    Dinogeorge
To:      Robert.J.Meyerson@uwrf.edu
To:      dinosaur@lepomis.psych.upenn.edu

In a message dated 96-01-26 06:44:07 EST, Robert.J.Meyerson@uwrf.edu (Rob
Meyerson) writes:

>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?
>
>

Ectotherms are the top predators in several environments even now. Who's to
say which groups would have been on top when endothermy was in the first
stages of its development?