Maiasaura Was a Devoted Parent That Raised Its Young in Nesting Colonies
Discovered in Montana in 1978, Maiasaura ('good mother lizard') provided the first strong evidence that some dinosaurs were attentive parents. Nesting sites showed dozens of nests grouped together, with hatchlings that had worn teeth — proof that parents brought food rather than abandoning young. Maiasaura herds may have numbered in the thousands, migrating like modern caribou.