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Revolutionary Laser Technique Dates 85-Million-Year-Old Dinosaur Eggs

9/16/2025

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Summary

Story summary

Researchers developed a laser technique for dating dinosaur eggs, improving insights into the Late Cretaceous period.
Carbonate uranium-lead (U-Pb) dating revealed that eggs from the Qinglongshan site in central China are about 85 million years old.
The eggs belong to the species Placoolithus tumiaolingensis, characterized by porous shells.
This method offers a more precise timeline for dinosaur evolution and extinction.
Researchers aim to use U-Pb dating at other fossil sites to explore dinosaur nesting behaviors.

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Story summary

Researchers developed a laser technique for dating dinosaur eggs, improving insights into the Late Cretaceous period.
Carbonate uranium-lead (U-Pb) dating revealed that eggs from the Qinglongshan site in central China are about 85 million years old.
The eggs belong to the species Placoolithus tumiaolingensis, characterized by porous shells.
This method offers a more precise timeline for dinosaur evolution and extinction.
Researchers aim to use U-Pb dating at other fossil sites to explore dinosaur nesting behaviors.