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Re: Tyrannosaurid Growth Spurts



Krip Kripchak (MariusRomanus@aol.com) wrote:

<It does not need to be the faster moving young (assuming of course that
that they were faster to begin with) chasing after the prey with big
dadda/mamma adult bursting out of the bushes... 

... What if The Big King was the one running after the herds of hadrosaurs
and ceratopsians, with the panicked animals being chased towards the
smaller members of the flock that were the ones hidden in the bushes? This
way, it is not so hard to herd the prey into a trap. When the numerous
young come dashing out from behind their duck blinds, they could run to
the left and to the right with greater ease than the larger adults. This
way, it is easier for the predators to inflict a great amount of damage
very fast, even to multiple prey itmes.>

  One of the reasons the initial assumption is that the smaller chase prey
towards the larger, is that the larger are not as mobile, or fast, as the
younger, and were prone to more damage. It is MUCH harder to hit a smaller
target that is quick and agile than it is to hit a slower, larger object.
Intuitively, this scenario leads itself to a good deal of logical
assumptions. The larger chasers into smaller prey would suggest something
of a less than selfish motive, as well as the idea that the smaller prey
are better capable of killing the prey than the larger chasing animals. If
it were larger prey, why chase it into smaller prey when you are already
dealing the massive damage? Just wait for the prey to bleed itself dry,
then stalk after it. Many dogs use this tactic to track their prey down,
as it gets weaker and more winded, but the entire pack is behind the prey,
not chasing it into a set of smaller animals. Incorportating all the pack
of tyrannosaurs, meaning young and old, creates speed-dependant
discrepancies: either the larger are faster than the younger, or the
younger are faster than the larger, in regards to more muscle per mass and
Paul's idea that a larger tyrannosaur was still fast.

  Cheers,

=====
Jaime A. Headden

  Little steps are often the hardest to take.  We are too used to making leaps 
in the face of adversity, that a simple skip is so hard to do.  We should all 
learn to walk soft, walk small, see the world around us rather than zoom by it.

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)


        
                
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