Where were dinosaurs located millions of years ago?

Towards the middle of the Cretaceous Period, dinosaurs had occupied every single continent, including the Antarctic and the poles. Finding an animal as large as a dinosaur at the south pole wouldn't be that big of a surprise, considering that the Earth was much warmer back then and that ice only came at the poles only for a few months every year. If the dinosaurs could migrate or hibernate, they could have lived anywhere on the globe.