Again you've forgotten the link Dan. I'll follow it up later. Many years ago I constructed a tree of reptile, dinosaur and bird evolution. I don't think I can design it to post it here but might try. I got the information from a book claiming that birds had developed from dinosaurs. Since that time more evidence has surfaced that at least some dinosaurs, especially young ones, were feathered. I've been interested in ornithology since I was about three.