Word: maiasaura
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...much the way social birds like penguins do. Though dinosaurs were never thought to be especially cuddly or caring, these creatures clearly nurtured their young, probably feeding them by mouth like baby birds until they were strong enough to leave the nest. Horner and his colleagues named the species Maiasaura -- Greek for "Good Mother Lizard...
Such parenting behavior is unknown in modern reptiles and had been unsuspected in dinosaurs, leading Horner to name this new genus Maiasaura, or "good mother" dinosaurs. Later he found a cluster of such nests, separated from one another by about 25 ft., the length of an adult maiasaur. He argued that they dated from a single breeding season 80 million years ago and that dinosaurs returned to this breeding ground yearly, like migratory birds...
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