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Answer
I think we can look to the birds (avian dinosaurs) for the answer as they can stand up without the aid of arms. It is simply a matter of getting one's limbs below the center of gravity before extending them. I am not aware of any studies suggesting tyrannosaurs could not do this. Furthermore, tyrannosaurs would have had the additional aid of their tails. From skeletal evidence and albertosaur trackways (in which the tails did not drag), it is clear tyrannosaur tails acted as counter-balances--10,000-pound walking, teeter-totters. The tail would have helped to keep the center of balance back on the body as the hindlimbs were moved into position underneath.
Clearly tyrannosaurs got up at least once during their lives (at birth) and there is no reason to believe they could not throughout life--armed with pathetic arms or not.
What else can I help you with?
What carnivorous dinosaur had teeth up to 8 inches long?
T-Rex
Who was the greatest meat eating dinosaur?
T-rex no? _____________ THE T-REX
Was a t-rex ever on a diet?
no the t-rex was the most feared dinosaur so no dinosaur dared to eat from him.
What was a carnivourous dinosaur?
A T-Rex was a carnivorous dinosaur.
Which is the oldest dinosaur?
The oldest dinosaur is the T-rex!
Was the t rex an Australian dinosaur?
No. T. Rex lived in North America.
What is a trex?
A t-Rex is a dinosaur.
A dinosaur that lived on land?
for example a Tyranosaurus Rex ( T-Rex )
What is the biggest dino egg?
The biggest dinosaur is the Tyrannosaurus Rex.
What dinosaur is big but has little arms?
The Tyrannosaurus Rex, or T-Rex.
What is a dinosaur from the cretaceous period?
t rex
What was the first dinosaur bone?
T-rex
