Thescelosaurus! is a website devoted to the dinosauria that has been running since the late 90's, and is still updated regularly. It features what is probably the best cladogram you'll find online, lists of every taxa(to species level) within each family- including brief descriptions of the taxa and what has been found of them-, and other sections covering topics such as worldwide localities where dinos have been found.
There is also a brilliant Mesozoic time chart, featuring all the stages and approximate ages.
A great place to learn about a multitude of dinosaur related topics, and even better for learning the taxonomy of the group!
The website is named so because the guy who runs it loves thescelosaurus! Nothing wrong with obscure basal ornithopods!
http://www.thescelosaurus.com/
There is also a brilliant Mesozoic time chart, featuring all the stages and approximate ages.
A great place to learn about a multitude of dinosaur related topics, and even better for learning the taxonomy of the group!
The website is named so because the guy who runs it loves thescelosaurus! Nothing wrong with obscure basal ornithopods!
http://www.thescelosaurus.com/