How did Maiasaura get its name?

"Maiasaura" comes from two words:

• Maia meaning "good mother" in Greek, and
• Saurus meaning "lizard" in Latin

So if you put the words together, the name means "good mother lizard."

Why?

Maiasaura was the first dinosaur thought to have fed its hatchlings while they were in the nest; most other dinosaurs did not mother their babies like Maiasaura did.