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Re: T-Rex Arms race
On Monday, June 27, 2005, at 08:19 PM, Andrew Simpson wrote:
I think it's a resonable concept that they used those arms when the
were young. If you look at a rendering of a full grown T-Rex and try
to imagine full usable arms they suddenly seem awkward. It's also
another few hundred pounds of bulk to support that may have little
real useful application if the mouth can do what it needs to do.
Snakes and sharks (and all fish) get by without arms.
And let's not forget most of the living dinosaurs, as far as subduing
They might have been a hinderence once in adulthood as they might have
been easy to rip off and thus cause horrid wounds.
As well because the jaws, though, eventually the strongest ever
conceived, would've been nowhere near AS capable of dismembering prey
alone. In this regard, we could regard them as "training wheels" of a
Mate grabbers if anything.
No problems there.
IF said tyrannosaur was trying to stand completely still doing so. This
stress could be greatly reduced by moving said struggling prey,
especially if further advancing towards prey, to the effect of impaling
said prey and thereby getting even better control on pinpointing those
massive bites. In this theory, I'm citing the straightness of the
manual claws, as opposed to most theropods more strongly recurved ones.
--- Dann Pigdon <email@example.com> wrote:
Tim Williams wrote:
probably were not worth
Sure, a skinny Hollywood
actress may have slipped through his fingers (and
eating), but the forelimbs of _T. rex_ were
probably useful for embracing
*something*. Maybe they served as grappling
devices, to help secure large
prey that was held by the powerful jaws. Like
hadrosaurs, or even
titanosaurs (in the American SW, anyway).
I have trouble with this use for the forelimbs. I don't care how
strong the forelimb muscles of a 'rex were - surely trying to hold
back a struggling multi-tonne hadrosaur (or worse, a sauropod!) would
rip an arm from its socket?