This site looks at four great dinosaurs:

Barosaurus
Triceratops
Corythosaurus
Tyrannosaurus

Other pages to explore on this site are:

                 The Ancient world         :                        Includes a timeline of the different dinosaurs period.
                  US lot                          :                        Looks at Early Humans.
                  Fossils                          :                        What they are, and how they're formed.
                  Extinction                     :                        Looks at the Dinosaur's disappearance.
                  Facts                             :                        Checks out Statistics on our four Dinosaurs.