When did the Cretaceous Period occur?

The Cretaceous Period spanned from approximately 145 to 66 million years ago, marking the final period of the Mesozoic Era.

What significant life forms dominated during the Cretaceous Period?

Dinosaurs like Tyrannosaurus rex and Triceratops dominated land, while marine reptiles, flying pterosaurs, and the first flowering plants (angiosperms) also flourished.

What caused the end of the Cretaceous Period?

The Cretaceous Period ended with the K-Pg (Cretaceous–Paleogene) extinction event, primarily caused by a large asteroid impact that led to widespread environmental devastation.

How did Earth's geography change during the Cretaceous?

During the Cretaceous, the supercontinent Pangea continued to break apart, leading to the formation of many of today's continents and creating new ocean basins.