Why is it that Julius Caesar diid not have a skeleton of Trex? Ancient civilizations dug the earth looking for gold and minerals for thousands of years andyet never found a single dinosaur. In fact, prior to the 1800's no dinosaur bones were ever found.

This is most odd. We can see why is because the theory of evolution came out in 1800's and people wanted to prove that prior to man the earth was full of monsters like Godzilla.