September 11, 2025 - Interestingly, the laser-based method led to successfully dating a cluster of dinosaur eggs from the Qinglongshan site, central China, to 85 million years ago (Late Cretaceous period).

5 days ago - 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.

September 11, 2025 - Now, in a first for paleontology, researchers used a new method to date dinosaur eggs by firing lasers at eggshell fragments. This way, eggs in central China have been dated to the late Cretaceous, making them about 85 million years old.

September 17, 2025 - They used U-Pb dating on the eggs, a method where researchers must first fire micro-lasers at eggshell fragments in order to remove minerals and deposits that developed during the fossilization process.

September 12, 2025 - Bi Zhao · To date the cluster ... recently been adapted for use on dinosaur eggs. “We fired a micro-laser at eggshell samples, vaporising carbonate minerals into aerosol....

September 14, 2025 - “I Seen Predatory Horse With ... Evolution · The laser-based dating method has revealed that the dinosaur eggs are approximately 85 million years old, with a margin of error of 1.7 million years....

September 16, 2025 - Source: Bi Zhao/ Frontiers To determine their age, researchers used lasers to shave tiny fragments of calcite, a calcium carbonate mineral present in the eggshells, and then measured uranium and lead ratios.

October 4, 2025 - Confirmed—Scientists in China successfully date dinosaur eggs using lasers and reveal that they are 85 million years old · New data on dinosaurs revealed. For many years, scientists have been excavating and analyzing fossilized dinosaur eggs ...

September 12, 2025 - “This laser-based method successfully dates a cluster of dinosaur eggs to 85 million years ago,” the authors noted, calling it a milestone for paleontology.

September 12, 2025 - To achieve precise dating, Zhao explained their method: "We fired a micro-laser at eggshell samples, vaporising carbonate minerals into aerosol. This is analysed by a mass spectrometer to count uranium and lead atoms.

September 17, 2025 - “Since uranium decays into lead ... in a statement. This approach revealed that the dinosaur eggs date back to the Late Cretaceous, specifically around 85 million years ago....

September 11, 2025 - The technique involves firing a micro-laser at your subject so that you vaporize the carbonate minerals into aerosol. The resulting vapor can then be put into a mass spectrometer to look for uranium atoms, which decay at a fixed rate, giving ...

September 14, 2025 - Scientists directly dated dinosaur eggshells in China, finding them 85.91 million years old, revolutionizing fossil timelines.

This is the first time that dinosaur eggs have been dated using carbonate uranium-lead (U-Pb) dating. The team published their results in Frontiers in Earth Science. “We show that these dinosaur eggs were deposited roughly 85 million years ...

September 16, 2025 - To date the egg, the team used U-Pb dating. “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.

October 2, 2025 - The dinosaur eggs in question were unearthed from the Qinglongshan site in central China’s Yunyang Basin. These eggs have been accurately dated to 85 million years ago, a time corresponding to the Maastrichtian epoch of the Late Cretaceous period.

September 12, 2025 - When Zhao shared the discovery ... dating? The process is surprisingly simple in theory. A tiny laser is fired at the eggshell, turning the minerals into vapor....

September 12, 2025 - Uranium naturally decays into lead at a fixed rate, acting as an “atomic clock” to calculate the age. The measurements indicated the eggs were laid about 85 million years ago, in the Late Cretaceous, with an error of 1.7 million years.

September 15, 2025 - In a groundbreaking study, a team of Chinese scientists has successfully dated dinosaur eggs that are 85 million years old using advanced laser technology.

September 11, 2025 - This is the first time that dinosaur eggs have been dated using carbonate uranium-lead (U-Pb) dating. The team has published its results in Frontiers in Earth Science. "We show that these dinosaur eggs were deposited roughly 85 million years ...