Alot of people on Wikipedia have been trying to make open book content on dinosaurs - apparently all genera are now listed. many descriptions started off as basic but more and more are being polished up with more and more citing reference material. Have a look. It is actually pretty hard to vandalize now as most vandalism edits get reverted within minutes.
One big problem with Wikipedia, though, is that they are stuck on using Linnaean classification. -- T. Michael Keesey