Researchers have measured the body temperatures of a wide range of dinosaurs using eggshells. The results offer clues to how the animals may have regulated their internal heat. The study was led by John Eiler, a professor of geology and geochemistry at Caltech, and Rob Eagle, a former Caltech postdoctoral scholar now at UCLA. The… Read more

Researchers working with specimens at the University of Alaska Museum of the North have described a new species of hadrosaur, a type of duck-billed dinosaur that once roamed the North Slope of Alaska in herds, living in darkness for months at a time and probably experiencing snow. Ugrunaaluk (oo-GREW-na-luck) kuukpikensis (KOOK-pik-en-sis) grew up to 30… Read more

Scientists believe that they now know why the biggest dinosaurs on the planet stayed away from the tropics for millions of years. Fluctuations associated with high atmospheric carbon dioxide, new findings suggest, may have prevented the establishment of a diversified populations of large dinosaurs such as sauropods and their relatives. The giagantic long-necked plant eaters… Read more