These dinosaur eggs survived 85 million years. What they reveal is wild

Dating dinosaur eggs has always been tricky because traditional methods rely on surrounding rocks or minerals that may have shifted over time. Now, for the first time, scientists have directly dated dinosaur eggs by firing lasers at tiny eggshell fragments. The technique revealed that fossils in central China are about 85 million years old, placing them in the late Cretaceous period. This breakthrough not only sharpens our timeline of dinosaur history but also offers fresh clues about ancient populations and the climate they lived in.

source https://www.sciencedaily.com/releases/2025/09/250911073141.htm