The Cretaceous Period lasted for nearly 80 million years. ... Back then Earth was a lot warmer than it is today and there was little or no ice at the North Pole or South Pole. Sea levels fluctuated ...

An ant and fly from the Cretaceous period offer insights into the history of Ophiocordyceps, the fungal parasite made popular ...

During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. Learn more about Earth's Cretaceous period from National Geographic. 1 of 10 ...

The Cretaceous period is one of the most crucial times in the Earth’s evolution. The division of the supercontinent, Pangaea, into Laurasia and Gondwana resulted in more diversity among animals ...

Determining what killed the dinosaurs 66 million years ago at the end of the Cretaceous Period has long been the topic of debate, as scientists set out to determine what caused the five mass ...

North America is currently in the "Goldilocks window" for finding dinosaur fossils from the Late Cretaceous period, a researcher has said. The Cretaceous period is a geological period that lasted ...

These pleasantly plump salamanders dominated the Cretaceous period. ... yet the giant slippery critters ruled parts of the United States and Australia for a a solid 200 million year run on Earth. ...

Dinosaurs roamed the Earth 66 million years ago. ... The effect would have been catastrophic climate change, marking the transition from the Cretaceous to the Paleogene period.

Researchers in Australia say 100-million-year-old fossilized bones found in western Queensland are from a newly identified species of pterosaur, a fearsome flying reptile from the Cretaceous period.

However, the Cretaceous–Paleogene extinction event was not the worst loss of life in our planet’s history. That distinction belongs to the Permian-Triassic extinction or the Great Dying .