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 ...

This is a preview. Log in through your library . Abstract Calcium carbonate structure in mollusc shells can be determined by infrared spectroscopy. Infrared analysis is easier and less expensive than ...