These radioactive elements decay at known rates, effectively acting as a built-in clock that reveals precisely when the eggs were buried millions of years ago. This natural timekeeping mechanism has ...

Researchers have found that fossilized dinosaur eggshells contain a natural clock that can reveal when dinosaurs lived. The ...

The story of that discovery begins just over 100 years ago, when swashbuckling fossil hunter Roy Chapman Andrews first dug up a clutch of dinosaur eggs in intact nests in Mongolia. (Although hailed as ...

Artistic reconstruction of a newly hatched troodontid-like dinosaur resting among fragments of its eggshell (loosely based on Mongolian microtroodontid-type). These eggshells, when buried within ...

Radioactive minerals in eggshells can help scientists pinpoint a fossil’s age with stunning accuracy. Scientists excavate dinosaur egg nests in Mongolia's Eastern Gobi Basin. National Geographic ...

An international team of geologists and paleontologists is pioneering a groundbreaking methodology to reliably determine the age of fossil-bearing rocks—by directly dating fossilized dinosaur ...