I disagree.
First of all, we have found skeletons of many beasts that no longer walk the earth. It is not logical to pretend dinosaurs didn't exist. This strikes me as the product of a timid, fearful creationist hiding under his bed.
No, there were plenty of large skeletons unearthed. They weren't from millions of years ago, but they do exist. Evolutionists didn't just "make up" the dinosaurs. What they made up was the fable about how long ago they lived, and that none of them ever saw a human being.
In fact, even human beings were taller before the Flood. As a species, we are de-volving if anything, in terms of strength, robustness, health, and intelligence.
According to Hovind, a.k.a. "Dr. Dino", dinosaurs did exist but they were contemporaneous with man. Like other wild beasts, they were eradicated by men (out of necessity) as they colonized the earth.
Also, the larger ones wouldn't be able to survive after the Flood due to the changes in climate, atmospheric pressure, and the composition of the atmosphere.
Since the Flood caused an unprecedented amount of water (with lots of dissolved minerals in it, since the fountains of the deep were shooting up at very high pressure from the earth, which eroded a lot of rock) it's no surprise that a lot of dinosaurs' bones would be trapped and fossilized in that layer of the geological record.