MissingLink, it's interesting that you bring up dinosaurs. There's been more than enough discoveries of dino's and humans coexisting. In fact there's museums around the world (including two in Texas, one in Germany, and France to name a few) that have such artifacts including warrior carve stones from Peru depicting humans fighting and interacting with dino's. Also there's a Temple in Cambodia that has animal carvings in pillars, including a Stegosaurus in the midst of them, which would seem to be out of place among known "living" animals. There's also been dino bones found in Alaska that were not fossilized, and still had blood fragments that should not exist if it were millions of years old. There's so many more discoveries than these, I'm only touching the surface here.
Another interesting fact is that the word dinosaur was coined in 1841, so any terrible lizard before that was called a dragon. Now we know of all the "folklore" of dragons, were they all just stories man made up through the centuries? There's an animal in Australia that the Aborigines call a "Bunyip". When a scientist told them they were looking for fossils of a particular dino they said, that animal "lives" deep in the Outback where it's not very accessible to man. There's many such stories around the world with the local natives including people in Brazil, Africa, South America, etc. Look at Loch Ness, I personally believe that it's a Plesiosaurus that can easily avoid detection in a huge lagoon/lake that is so murky and deep that sonar can't penetrate the water. It's a very interesting study as well. I personally don't think that humans living with dinos proves or disproves evolution however. As far as dinos being on the ark, I say why not. 85-90 percent of dinos were smaller that a Shetland Pony or a really big dog like a Great Dane. It's only the big boys that get the mass attention. Now with the other 15 percent, the Bible didn't state that the animals were adults. Maybe some were maybe some weren't. So a dino that will grow six stories after years of maturing, really wouldn't be all the big after 6 months of growth (about the time of Noah and his family residing in the ark). Think of a cute little Cayman that people have as pets for a few years before leashing the beast back to the wild.
There's so much more I'd like to speak of but I'm not trying to overload you with information. If you're interested, I can send you some more in depth research on this subject. Thanks for listening.