You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and ... It was caused by a large asteroid crash-landing off the coast of Mexico, which changed the climate of the planet ...

During this period, oceans formed as land shifted ... After a temperature spike in the mid-Cretaceous, the climate began to cool, and the tenor changed. Other creatures, such as frogs, salamanders ...

Known today as the “Black Belt,” the southeastern United States was once covered by an ancient sea—one that continues to shape modern history.

Scientists discovered that volcanic eruptions in India’s Deccan Traps 66 million years ago released gases that altered ...

New research suggests that Earth’s orbital variations—the slow changes in its tilt, axial precession, and shape of its ...

However, the Cretaceous–Paleogene extinction event ... During this dramatic period of climate change about 252 million years ago, about 80 to 90 percent of all species on Earth were wiped ...

Jurassic and Cretaceous. During this era, the land gradually split from one huge supercontinent into smaller ones. The associated changes in the climate and vegetation affected how dinosaurs evolved.

An international team of scientists has synchronized key climate records from the Atlantic ... before the extinction of the dinosaurs at the Cretaceous/Paleogene boundary. New high resolution ...

Megaraptorids were a group of fearsome predators in the Cretaceous period (145 million to 66 million years ago). They lived in the ecosystems of Australia and South America, which were joined ...