The so called dinosaur bones you see at museums were fabricated by artists and are not real dinosaur skeletons nor fossils of real dinosaur skeletons

Calling dinosaurs dragons does not change that

You never personally found the fossils but are expected to trust other people at their word that they did

Unless there is soft tissue connecting bone to bone such as tendons, muscles or ligaments you do not know what bone would have connected to another bone through soft tisdue