What are the biggest, most important dinosaur discoveries in history?
It's a question now being asked after more than 100 footprints from one of the biggest dinosaurs that ever lived were found off the coast of Scotland.
They were discovered by researchers on the Isle of Skye and date back 170 million years.
But how do they compare with other fossil finds over the last 200 years?
Newsround reporter Jenny has put together this, unofficial, run down of five top finds that changed what we know about the dinosaur world.