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Re: T. REX THE HUNTER



Neat observation:  I like the idea of _Baryonyx_ as a scavenger due to its
narrow snout.

    Allan

-----Original Message-----
From: Dann Pigdon <dannj@alphalink.com.au>
To: dinosaur@usc.edu <dinosaur@usc.edu>
Date: Thursday, February 12, 1998 1:05 AM
Subject: Re: T. REX THE HUNTER


>Jonathon Woolf wrote:
>>
>> A couple of misconceptions here.  Lions and hyenas are always competitors
>> for the top predator slot.  One usually kills, the other usually
scavenges
>> -- but depending on where you go in Africa, either species might fill
either
>> role.  In some areas, the hyenas do most of the killing and the lions
>> scavenge.  In other areas, the lions do most of the killing and the
hyenas
>> scavenge.  In still other areas, both lions and hyenas kill, and both
will
>> scavenge given a chance.  There's no known modern large carnivore that is
a
>> pure scavenger, yes, but on the other hand there's only one modern large
>> carnivore that will never scavenge, and that may be more a matter of
>> necessity than preference.  No cheetah has ever been observed to scavenge
>> another animal's kill, but then cheetahs are not the bravest of cats, and
>> dead animals in Africa are usually covered by other scavengers within
>> minutes.  Point is, evolving as a hunter doesn't exclude scavenging as a
>> secondary or even primary method of finding food.
>>
>> Personally, I have trouble believing that anything as big as T. rex could
>> find enough food to keep itself going _exclusively_ by scavenging, unless
>> there were an _awful_ lot of dead dinosaurs around, due either to
frequent
>> disease or to another predator that had a habit of leaving partial
carcasses
>> in its wake.  That's just an opinion, obviously, but it's all I've got
til
>> somebody produces better evidence one way or the other.
>>
>> -- Jon W.
>
>One thing that I have noticed amongst many extant scavengers is that
>they usually have long narrow snouts/beaks to probe deep into
>a carcass (vultures, maribu storks, jackals). I can't see a Tyrannosaur
>using that great box of a head to pick a carcass clean. Perhaps we
>should be looking at species such as Baryonyx as the specialised
>scavengers?
>--
>____________________________________________________
> Dann Pigdon
> Melbourne, Australia
>
> Dinosaur Reconstructions:
> http://www.geocities.com/capecanaveral/4459/
> Australian Dinosaurs:
> http://www.alphalink.com.au/~dannj
>____________________________________________________
>