Art and "Reality"

["Lawrence Dunn" <daspletosaurus@msn.com>]

Two questions concerning paleoart and current theories of dinosaur appearance:

1) Is there any possibility that the blunt bone mass on the face of 
Pachyrhinosaurus was actually a support for a huge horn?  I've seen one or two 
pieces of paleoart depicting such a horn.

2) Could Tyrannosaurus Rex have tucked its wee arms back against its body as 
it closed in on a prey animal?  This has also become a popular depiction of 
Tyrannosaurus.

Any thoughts?  As a non-pro, I am heavily subject to the influence of art and 
would like to verify these two (for me ) unusual depictions.

Thanks

Daspletosaurus@msn.com
"The Crystal Palace dinosaurs WERE the correct depiction after all?"