Where did most Maiasaurus' live?

Question

In what continent(s), region, country, and/or state did they live in?

Answer 1

I think Maiasaurus means good mother lizard similar to Dainosers which live during the Mesozoic era.Some says it live in Newzealand when it cuts from the Gondwana land and other says in Pennsylvania.

Answer 2

Where most fossils are found does not mean that most of the critters lived there. All it means is that that particular spot had favourable conditions for preservation. No one can really say where they were most plentiful.