The Cretaceous period is a major division of the geologic time scale, spanning from approximately 145 to 66 million years ago. It is the third and final period of the Mesozoic Era, following the Jurassic and preceding the Paleogene period of the Cenozoic Era. The Cretaceous period is notable for several reasons:
1. **Diversity of Life**: This period witnessed a significant diversification of dinosaurs, which dominated terrestrial ecosystems. It