Using a novel technique called clumped isotope paleothermometry, an international team of paleontologists analyzed eggshell fossils representing three major dinosaur groups and found that these creatures were characterized by warm body temperatures. A nesting cassowary-like dinosaur named Beibeilong sinensis in the act of incubating eggs. Image credit: Zhao Chuang. “Dinosaurs sit at an evolutionary point between birds, which are warm-blooded, and...
