This site looks at four great dinosaurs:

Barosaurus
Triceratops
Ccrythosaurus
Tyrannosaurus Rex

Other pages to explore on this site are:

The Ancient world    :    lncludes a timeline of the different dinosaur periods
Us Lot                       :    Looks at Early Humans
Fossils                       :    What they are, and how they're formed
Extinction                  :    Looks at the Dinosaur's disappearance