According to the reading there are numerous reasons stated that the dinosaurs were migrating through their career. In contrast the professor states the contradiction points of the reasons mentioned in the reading.
First of all, the passage states that the special kind of dinosaurs , Edmonstosaurus, had to migrate because of finding food to survive, But on the other hand the professor states that in that period of time the weather exchanges were not notable as they are today, and whether the seasons change the vegetation amount didn't vary a lot. Also she noted that even if the vegetables were hard to find in winter, there would be other nutrition available.
On the other hand the author states another aspect that would cause edmonosaurs to migrate.