T. rex skull

[Filip Milovanovic <fmpaleo@verat.net>]

I have a few T. rex skull related questions, 
in order to do a life reconstruction of its head.
 
1. When the animal's mouth is closed, does surangular partly goes under the 
jugal?

2. If I figured well from the skull drawings & fossil fotos, in closed jaws 
ectopterygoid goes behind the surangular (in lateral view). Am I right?

3. On the skull drawings there's that weird excavation (or something) on the 
part 
of the postorbital right above the orbit. What is that? And, if something like 
that is 
known, how it reflects on the appearance of the live animal?

4. What is the hypothetical angle for the field of view? (Is this impossible to 
know?) 
This is not too important for the reconstruction, but I'm just curious.