From the evidence of fossil footprints and the distribution of the remains of dinosaurs, it seems likely that the plant-eating species migrated according to the seasons. In the Jurassic and Cretaceous Periods, when the dinosaurs flourished, there would have been variations in the seasons just as there are today. Like any other grazing animal, the dinosaurs would have migrated to where they could find food. Maiasaurus is thought to have lived in herds containing thousands of individuals. These herds migrated along regular paths, flattening the ground with their great weight as they travelled.

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