| In
                            the 1980s, the discoveries of John Horner, from the Museum of
                            the Rockies in Montana, showed the behavior of parental care
                            in dinosaurs with his hatchling and nestling sized Maiasaura specimens. During
                            the 1990s, much attention was brought to the subject of egg embryos
                            and hatchlings with worldwide discoveries, especially in China,
                            Argentina, France, and Spain. |  Maiasaura  Nestling |