[gore3000]

We've found coprolites (dinosaur poop) from both types of critters. From skin impressions, and one "mummifed" duckbill, we know that some had feathers, some had scales, and the winged reptiles - pterosaurs - mostly had fur. With our knowledge of the biology of living critters and with the help of modern computers, we've been able to reconstruct their movements; for instance, a recent reconstruction showed the T. Rex lacked the muscle mass to run.

As to T-Rex, there was a thread here which pretty much blew that supposition out of the water for one thing we do not have the vaguest idea of the size of their muscles, for another some of the fastest animals have very skinny legs. It is interesting that in spite of these great differences evo paleontologists throw all dinosaurs into the same classification. Truth of the matter is that we know very little about extinct creatures but phony scientists keep putting the many varied species into a procrustrean bed of their own making.

[Junior]

If you'd actually read the T-Rex thread, you'd know that the computer models of T-Rex running, like they had it do in the movie Jurrasic Park, indicated the critter would have to have leg muscles equal to about 84 percent of its body mass -- which is precisely what I intimated in the post above. Scientists are forever refining their theories in the light of new evidence. This is a strength of science. You, on the other hand, dismiss any new evidence out of hand if it disagrees with your particular world view. You are not unlike the Pharisees in the gospel of John who refused to accept the evidence of the blind man made able to see because it flew in the face of their Moses-based world view. They tossed the man out of the synagogue; you toss the evidence out of the window.