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Re: Warm-Blooded debate
In a message dated 97-06-18 19:22:03 EDT, Dinogeorge@aol.com writes:
> Since crocs >almost< have four-chambered hearts,
Or indeed formerly had them...
> and birds have them, we can
> use the Extant Phylogenetic Bracket to argue that all dinosaurs, which are
> phylogenetically between crocs and birds, had them.
> This, rather than
> endothermy--which developed much later, perhaps only in the theropod
> that eventually evolved into birds--
Whose words are these? If they are yours, how do you know this?
> was necessarily responsible for
> dinosaurs' erect stance and cruising ability.
Nevertheless, can you name me a fully erect, fully four-chambered-hearted,