Lionking, the entire evolutionary record of hominids fails utterly to overlap with the existence of dinosaurs. It would take a lot more than 'only one find' to overturn that particular huge evidentiary edifice. If the fossilised remains of a modern human were found with the fossilised remains of a dinosaur, and if radioisotope dating techniques showed them to be the same age, then that one find would stand in contravention of an entire pile of evidence showing the development of modern man through such antecedents as Australopithecus afarensis and Homo erectus, none of which were around within tens of millions of years of the extinction of the dinosaurs. So either we would have to explain how modern humans could have existed tens of millions of years before their evolutionary ancestors or how dinosaurs could have survived into the era of modern man without leaving vast amounts of evidence of themselves, and if they did survive that long how they became extinct within the last few thousand years.
Science does not work by 'only one find' toppling accepted theories. That one find stands as an anomaly to be investigated, and if no further supporting evidence comes along it is discounted as just that: an anomlay. We have tried over and over again in your time on this board to get you to show some understanding of how science works but I am saddened to see that it still seems to be in vain.