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Re: Fwd: Re: New Study, T rex Could've Been A Scavenger
>Personally, i think this study has many, many flaws. It's highly improbable
>that Tyrannosaurus had a reptilian metabolism, and we will never know
>whether Hell Creek had prey concentrations & populations close to that of
>the Serengeti. We shall always have to consider that every mammalian
>carnivore today is a predator to some extent.
Regardless of what Bakker, Paula and others have stated on the matter, there is
still no reason for _T.rex_ to not have been a bradymetabolic "good reptile."
Work by Nicholas Hotton, James Farlow, James Spotila, Walter Auffenberg (to a
lesser extent) and others, have shown that a large bradymetabolic animal can do
just as well as a large tachymetabolic one. Some studies even show a general
trend towards bradymetabolism in larger animals (which makes sense, if the
entire point of being tachymetabolic is just to keep warm).
Statements that a bradymetabolic critter couldn't form the same pred/prey
ratios seen in the fossil record have been either rebutted, or seriously
questioned, and statements about a lack of aerobic potential make no sense
either (carrier's constraint in many modern reptiles is do to anatomy, not
Anyway, enough of my soap box spiel. The only other thing I can add to the
skepticism on this recent research is that no modern reptilian predator is an
obligate scavenger either.
Yep, to date the only way to make a living as a scavenger is to be a soarer.
That, or an insect. They can do anything. :)
"I am impressed by the fact that we know less about many modern [reptile] types
than we do of many fossil groups."
- Alfred S. Romer Osteology of the Reptiles