"There is no such thing as a scientific theory that can be contradicted. "
One of the main criterion for a system of principles to be elevated to the high status of scientific theory is that they must be able to be falsified.
Find a human skeleton in the same strata as dino bones and you would falsify evolution.
Your statement just doesn't reflect the realities of how science defines theory.
No you wouldn't. The faithful would cry out, that it is just an anomaly. Look at all the other evidence. Just ignore the skeleton as something curious and unexplainable for the moment. We essentially found a similar situation when some "junk" DNA of humans and mice were identical(humans, mice, and the common ancestor lie in the same strata). There is no reason for that situation to have occurred according to Darwin's theory.