This site looks at four great dinosaurs:

Barosaurus
Triceratops
Corythosaurus
Tyrannosaurus Rex

Other pages to explore on this site are:

The Ancient world    :      Includes 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 
Dino Facts              :      Checks out Statistics on our dinosaurs