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RE: Tyrannosaurus arms
>First, a common aspect for any bipedal animal is that the center of
>gravity will be located roughly above the hips. Therefore, all that
>Rex would have to do to get up is to push up with it's feet (Rex may
>have pushed both up and *back* to counter any unstability from that
Um, Rob, above the hips of a T rex is only air---that is in the line that
is perpendicular to the plane of the ground. The T rex's center of
gravity is slightly above the middle of the hips and slightly forwards
along the ray of the forepart of the pubis. In a vertical line directly
above the 'ball' of the foot during a stand.
A common aspect of VERTICAL bipeds is to have the center of gravity
slightly above the hips, but T rex isn't vertical.
All T rex had to do was push up with the feet and swing half it's
humongous mass in the opposite direction, just like a teeter-totter or
Just nit-picking, but there you are.