[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

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