Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed flourishing communities. Alamosaurus was one of the last dinosaurs from ...

Radioactive minerals in eggshells can help scientists pinpoint a fossil’s age with stunning accuracy. Scientists excavate dinosaur egg nests in Mongolia's Eastern Gobi Basin. National Geographic ...

Add Yahoo as a preferred source to see more of our stories on Google. Alamosaurus was one of the last dinosaurs from southern North American. Paleontologists have recently dated the rock formation ...