John Horner

John Horner served as the curator of paleontology at the Museum of the Rockies in Bozeman, Montana. The museum houses one of the largest collections of dinosaur fossils in North America, including extensive specimens from the Hell Creek Formation in Montana.

Horner's team discovered extensive dinosaur nesting grounds at a site known as Egg Mountain, which contained the fossils of Maiasaura—a name meaning 'good mother lizard'—alongside nests with eggs and hatchlings at various growth stages. This was among the first clear evidence that some dinosaurs cared for their young after hatching.

Yes, Horner served as the scientific advisor for Steven Spielberg's 'Jurassic Park' (1993) and its sequels, helping guide the depiction of dinosaurs on screen. The character of Dr. Alan Grant in the film was partly inspired by Horner's work and personality.

Horner's discoveries at Egg Mountain overturned the prevailing view of dinosaurs as purely reptilian, egg-laying animals that abandoned their young. His evidence of Maiasaura parental care demonstrated that some dinosaurs engaged in complex social and nurturing behaviors previously associated only with birds and mammals.