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 ...

The Cretaceous Period, lasting from about 145 to 66 million years ago, was the end of the Mesozoic Era. The planet was warm, and sea levels were high. As a result, large landmasses were flooded with ...

The Mesozoic Era can be subdivided into three periods ... oceans were dominated by whale-sized marine reptiles. In the Cretaceous period, the dinosaurs dominated the land, and marine reptiles ...

The highest trophic niches in Mesozoic oceans were filled by diverse marine reptiles, including ichthyosaurians, plesiosaurians, and thalattosuchians, dominating food webs during the Jurassic and ...

When we think of the age of dinosaurs, we often picture huge reptiles like Tyrannosaurus rex or long-necked dinosaurs ...

The Atlantic Ocean may have formed millions of years earlier than previously thought, igniting a period of climate change, scientists found.

Geologists recently discovered the fossil of a Cretaceous-era mosasaur vertebra near Starkville, Mississippi. The experts ...

Heriot-Watt scientists have discovered giant underwater mud waves buried deep below the Atlantic Ocean, 400 kilometers off ...