In the Cretaceous period, Earth was plagued by widespread volcanic activity, oceanic oxygen depletion events, and mass extinctions. Fossils from that era remain and continue to give scientists clues ...

The research vessel JOIDES Resolution collecting samples in the Indian Ocean off the western coast of Australia in 2017. Gabriel Tagliaro During the Cretaceous Period around 100 million years ago, ...

How do you date something as fragile as an eggshell after it has spent tens of millions of years locked in stone? A new laser-based test has done exactly that, pinning dinosaur eggs from central China ...

Geologists doing fieldwork in southeastern Utah's Cedar Mountain Formation found carbon isotope evidence that the site, though on land, experienced the same early Cretaceous carbon-cycle change ...

Climate change had little to do with the demise of the dinosaurs, but the last million years before their extinction had a complex pattern of warming and cooling events that are important to our ...

Today, Antarctica is a huge frozen continent, though it was once temperate enough to be covered in swampy forests. Now, a team of scientists has discovered fossilized tree resin—amber—on the continent ...