Utilizing ‘Unprecedented’ Method, Archaeologists Make First-Time Dinosaur Egg Discovery

Archaeologists in China have dated dinosaur eggs for the primary time, revealing the age of the traditional fossils, in accordance with a brand new examine printed in Frontiers in Earth Science.

Researchers Used an ‘Atomic Clock’

A analysis workforce, led by Bi Zhao of the Hubei Institute of Geosciences, uncovered the fossils on the Qinglongshan web site within the Hubei Province. Utilizing an “unprecedented” approach referred to as in-situ carbonate uranium-lead (U-Pb), the analysis workforce decided the fossilized eggs, which belong to the Placoolithus tumiaolingensis species, to be 85.91 million years previous. The U-pb approach, colloquially known as an “atomic clock,” works by capturing micro-lasers at small items of eggshell samples, which vaporizes the carbonate minerals into aerosols which scientists can then analyze utilizing mass spectrometers to rely uranium and lead atoms.

“We fired a micro-laser at eggshell samples, vaporizing carbonate minerals into aerosol. This is analyzed by a mass spectrometer to count uranium and lead atoms,” Zhao explained in the study. “Since uranium decays into lead at a fixed rate, we were able to calculate the age by measuring accumulated lead—it’s like an atomic clock for fossils.” The dating results were remarkably consistent, showing results within 1.74 million years.

Fossils Hold Secrets of Climate Change

Scientists believe the fossils will hold answers regarding climate change in the Late Cretaceous period, when the Earth’s climate cooled at such a significant rate that it led to the extinction of dinosaurs. “Our achievement holds important implications for analysis on dinosaur evolution and extinction, in addition to environmental adjustments on Earth through the Late Cretaceous,” Zhao said. “Such findings can remodel fossils into compelling narratives about Earth’s historical past.”

This story was initially reported by Men’s Journal on Sep 17, 2025, the place it first appeared within the News part. Add Men’s Journal as a Preferred Source by clicking here.