The term "Caenozoic" refers to a geologic era that spans from about 66 million years ago to the present, also known as the Cenozoic era. It is the most recent era in Earth's history, following the Mesozoic era (commonly referred to as the age of dinosaurs) and preceding the current age, known as the Quaternary period.
During the Caenozoic era, significant changes in climate, vegetation, and animal life occurred. It is characterized by the development and dominance of mammals, including the evolution and diversification of various species. This era witnessed the emergence of numerous mammalian orders, including primates, rodents, carnivores, and ungulates, which eventually led to the evolution of humans.
The Caenozoic era is divided into three major periods: Paleogene, Neogene, and Quaternary. Each period marks distinct events and developments in the Earth's history, such as the expansion of grasslands, the appearance of flowering plants, and the extinction of various animal groups.
This era also witnessed several major geological events, including the opening and closing of oceans, the formation of mountain ranges, and the impact of meteorites. Additionally, the Caenozoic era played a crucial role in shaping the current geological and environmental conditions of the Earth.
Overall, the Caenozoic era stands as a critical period in Earth's history, characterized by immense biological and geological changes that have paved the way for the complex ecosystem and diverse life forms that exist today.
