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New Dating Method Reveals 85.9 Million-Year-Old Dinosaur Eggs

9/12/2025

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Summary

Story summary

Researchers in China have dated fossilized dinosaur eggs to approximately 85.9 million years using a new method.
The eggs, discovered in Shiyan, were analyzed through laser techniques measuring uranium and lead isotopes.
This approach may improve age estimations for fossils, though some paleontologists warn of potential alterations during fossilization.
The findings could deepen insights into dinosaur evolution and Cretaceous environmental changes.

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Story summary

Researchers in China have dated fossilized dinosaur eggs to approximately 85.9 million years using a new method.
The eggs, discovered in Shiyan, were analyzed through laser techniques measuring uranium and lead isotopes.
This approach may improve age estimations for fossils, though some paleontologists warn of potential alterations during fossilization.
The findings could deepen insights into dinosaur evolution and Cretaceous environmental changes.