Maiasaura was a hadrosaur, or duck-billed dinosaur, that lived during the late Cretaceous Period. Its name is derived from Greek, “maia” meaning mother or good mother, and “saura” being the feminine ...

Only the luckiest Maiasaura survived their first year. Baby Maiasaura – like these in a nest mockup at London’s Natural History Museum – hatched into a world of dangers. Photo by Brian Switek.

If Maiasaura individuals could survive through their second year, they enjoyed a six-year window of peak physical and reproductive fitness, when the average mortality rate was just 12.7 percent.

The researchers tested eggshell fossils from a Troodon, a small, meat-eating therapod (the same family as the T-Rex); a duck-billed, plant-eating dinosaur called a Maiasaura; and a Megaloolithus ...

Of all dinosaurs, Else suggests that hadrosaurs such as Maiasaura were the most likely to produce milk because their babies may not have been able to effectively break down plant food until they ...

Caption Holly Woodward points at a <i>Maiasaura</i> fossil. Decades of research on Montana's state fossil -- the 'good mother lizard' <i>Maiasaura</i> <i>peeblesorum</i> - has resulted in the most ...

In new research, my colleagues and I determined how much energy minibus-sized dinosaurs called Maiasaura used while growing to adulthood. Our results, published in the journal Paleobiology, show ...

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Baby Maiasaura and a parent at a mount in the Wyoming Dinosaur Center. Baby Maiasaura bones and egg fragments were the first dinosaur fossils in space. Photo by the author Last year, David ...