Putting bones together the right way must be hard enough if you know what the animal looks like but it is even trickier when the animal has been extinct for over 66 million years! That didn’t stop 3AS from trying to interpret their bag of bones today. Starting from exactly the same set of fossils, we came up with some different ideas. However, we were not the only ones as we found out about how scientists over the last 150 years have changed their ideas about what an Iguanodon  may have looked like when alive.