Maiasaura was named the good mother because some palentologists think that it looked after its babies in the nest after they hatched from eggs. Maiasaura lived in large herds to protect there young and nurture them. They are able to move either on there two back legs or on a four legs. Maiasaura where herbivores that lived in North America during the Cretaceous period. The most notable members of the Maiasaura is the Maiasaura family Millie, Motty and Mashell.