A fossil site in New Mexico with numerous dinosaurs, including the gargantuan Alamosaurus, dates to shortly before the asteroid strike that abruptly ended the age of dinosaurs, according to research that underscores that these creatures were still thriving on the eve of destruction.
Paleontologists have debated the age of fossils found at the Naashoibito site in northwestern New Mexico. The new study used two dating methods to determine that the
