RE: a Tyrannosaur theory

[Michael Mortimer <mickey_mortimer111@msn.com>]

Anthony Docimo wrote-

> Maybe tyrannosaurs's arms didn't grow as much as the rest of their bodies 
> did....in other words, their arms didn't look so small when they were 
> young.
>
> thoughts?

We have juvenile tyrannosaur specimens with arms, so we know this is true.  
Young juvenile Tarbosaurus (Shanshanosaurus holotype) has a humerus 32% the 
length of its femur.  Older juvenile Tarbosaurus (Gorgosaurus novojilovi 
holotype) has a humerus 22% the length of its femur.

Mickey Mortimer