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re:Dinosaur Hunting techniques
>In this way, it can often catch a gazelle long before the gazelle has
>a chance to reach its top speed (at which point a lion has absolutely
>no chance of success).
You don't mention that lions tend to have multiple animals bringing
down larger prey, not just attacking one-on-one. This seems to be
determined mostly on how hungry the pride is when the prey is brought
down. So a baby gazelle may be brought down one-on-one, but an adult
gazelle/wildebeast/zebra may be brought down by several individuals.
How does this affect your theory?
>As a slight aside, it is curious to note that, as in the case of the
>cheetah, most analyses of animal locomotion concentrate on limb
>movement patterns and speed. Very rarely, if at all, are such
>factors as the acceleration abilities considered. Cheetahs are known
>to be good high speed runners. But no one really knows how quickly
>they can reach those speeds, because that sort of research has just
>not been done.
Well, they have. Didn't you know that they race cheetahs like
greyhounds in Egypt and other Arabian countries (or they used to
during French occupations, and much earlier)?
Why, in your discussions of the physiology of the animals, lions,
cheetahs, and T rexs, do you consider lions, being a very robust
animal, like cheetahs, and not like T rex, also a very robust animal.
T rexs certainly aren't gracile in any way. Cheetahs are very
gracile. They have flexible spines so that in the full gallop their
spines ripple like a trampoline. I don't picture T rex's spine doing
anything so undignified during a run. I can see (perhaps) something
smaller and more elegant of form like Veloceraptor or Deinonychus
developing along the lines of a speedster like the cheetah, but not
ol' brick T rex. He's built like a truck, not a Ferrari. Perhaps
even Allosaurus fragilus might be considered to be a speedier design,
but T rex?
I think your point about tendons is valid, but I believe T rex's
adaptations were more for being the biggest kid on the block, not the
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(and what with all the fused tendons along most therapods' tails, you
don't see the completely supple spine like in a cheetah, anyways.
Therapods spines seem to have been reinforced to prevent exactly that
kind of movement.)