Like any other branch of science, paleontology is constantly evolving. Somewhere some fossil crops up, and experts examine them as evidence and come up with tentative theories. Now, the real test lies in whether those theories are able to endure through time and against counter arguments and criticism from contemporary and future scientists. And when you work on something long enough, especially something like dinosaurs that existed millions of years ago, some misconceptions, misunderstandings and incorrect theories are bound to appear and disappear over time.
Here are some such historical facts about dinosaurs that have now been disproved:
The Stegosaurus had a butt in its hindquarters
In 1877, the discovery