What is another word for the Cretaceous?
Pronunciation: [ðə kɹɛtˈe͡ɪʃəs] (IPA) 
The Cretaceous is a term used in geology to describe a specific time period approximately 145 to 66 million years ago. There are several other terms used as synonyms for this era, including the age of reptiles, the chalk age, and the cretaceous system. The age of reptiles refers to the dominance of dinosaurs, plesiosaurs, and other reptiles during this period. The chalk age refers to the vast formations of chalk that were left behind by the microscopic organisms called coccolithophores that lived in the oceans during this time. Finally, the cretaceous system encompasses the rock formations and fossils that are characteristic of the Cretaceous period.
