Links
A tiny list at the moment, these are the three web pages I most referenced while doing a research paper a while back.

The Dinosauria: UCMP's Tyrannosaurus Rex Expo

The Unnatural Museum: The UnMuseum, Tyrannosaurus Rex

Enchanted Learning: Tyrannosaurus Rex

And these are a few random links

Discovery Online -- Not just Dinosaur stuff here, but most of it's interesting.

"Dino Don's Webpage"

Dinosaur Art

Offical Page for "Dinotopia"