I loved Dinosaurs! Who didn’t have a favorite growing up? I’m actually shocked I haven’t written about a good Dinosaur site yet. The BBC has a great site dedicated to all things Dinosaur related. http://www.bbc.co.uk/sn/prehistoric_life/dinosaurs/ The site covers everything from the different types of dinosaurs to how fossils are formed to the theories surrounding their mass extinction.
With video and wonderful supporting stories, there are plenty of resources for many different age groups. If you are interested in having kids do research on dinosaurs, check out http://dinodictionary.com/ for all of your dino needs.
This site has everything you could possibly need from a research standpoint. Just type in the name of the dinosaur you are looking for and you will be taken to page filled with information. http://dinodictionary.com/ is actually part of http://www.dinodatabase.com, which has even more information on dinosaurs and their lives on earth. They are a great pair of sites for any kid that needs information on their favorite dinosaur.