The Cretaceous is a geological period that began 145 million years ago and ended 66 million years ago. It is the last period in the Mesozoic Era. It comes after the Jurassic Period and before the ...

During this period, oceans formed as land shifted ... and skies would never be the same in the new era that dawned after the close of the Mesozoic era.

Scientists divide the Mesozoic Era into three periods ... Sea levels rose and fell repeatedly during the Cretaceous Period. At the highest point there were many shallow seas separating parts of the ...

This article examines the fastest dinosaurs from the Mesozoic era ... This ABSOLUTE UNIT lived during the Early Cretaceous period in modern-day Utah and was named as such. Its size and agility ...

3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run ...

The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a ...

Those years are known as the Cretaceous period, the longest portion of the Mesozoic era, which ended approximately 66 million years ago (after a meteor strike, many scientists believe, eliminated ...

For many, it is dinosaurs, the fierce and powerful stars of the Mesozoic ... during the Cretaceous mass extinction (the fifth mass extinction) about 66 million years ago, a new era of “megafauna ...