Re: Regarding Spinosaurus

[Jura <archosaur@reptilis.net>]

Barring any cladistic pedantry (i.e. don't go saying: "what about birds"), 
"warm-bloodedness" hasn't been proven in any dinosaur.

To be fair though, neither has "cold-bloodedness."

Jura

--- "Fam Jansma" <fam.jansma@worldonline.nl> wrote:
>>They are cold-blooded and spend most of their time lying around.
>>*Suchomimus* at least looks like having spended much of its time at least
>>standing, if not walking, and was pretty certainly warm-blooded.
>
>
>Without real evidence there is no way to be certain about the matter, it has
>been proven that maniraptors are partly warm-blooded, it has been proven
>Ornithopods were probably warm-blooded, but there is no evidence saying that
>Spinosaurs were warm-blooded. Alright, I know, opening old wounds here, but
>the sail could be evidence that is was col-blooded. "Carnosaurs" (wrong
>term...) have a totally different physiology than the agile "Coelurosaurus"
>by being more massive and all, so when saying if the Coelurosaurs were
>warmblooded, than Carnosaurs must be warmblooded is a wrong thought. They
>did evolve both from the same stock, but I doesn't mean they are alike in
>life-style and all.

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