Answer:
The expression good mother dinosaurs is a term given to a sort of dinosaur called Maiasaura which lived in the Upper Cretaceous Period, about 76.7 million years back.
Explanation:
This term is given to the Maiasaura in view of the importance of its name Maia.
Fossils of Maiasaura or good mother dinosaurs have been found as homes with eggs, fetuses and youthful creatures, all together.
Good mother dinosaurs is basically a kind of dinosaur.
