RE: late night thoughts: not all T. rexes were adults

[Dino Guy Ralph <dinoguy@sbcglobal.net>]

Andy Grass wrote:

>This idea was presented in one of the CG dinosaur shows on the
>Discovery Channel, I'm totally blanking on which one though.  The
>basic idea was the juveniles chase the prey and corral it and then the
>bigger ones jump out of the brush and take it down.

"When Dinosaurs Roamed America: Chapter 4 (Mid-late Cretaceous)."  

The prey was a large duckbill which had evolved the ability to move its jaws
side to side as well as up and down, in the manner of a cow.  Unfortunately,
this was not how duckbill jaws worked.

I think that _Tyrannosaurus rex_ was particularly attractive in this
program, in contrast to the odd "Walking with Dinosaurs" _T. rex_.  And if
you like speedy juvenile rexies, these bad boys really put the "ran" in
_Tyrannosaurus_!  Roadrunners from Hell, indeed!  

Dino Guy Ralph
Docent at the California Academy of Sciences
Dinosaur and Fossil Education
Member of the Society of Vertebrate Paleontology