Paleosozoic,mesozoic,cenozoic?

The Paleozoic, Mesozoic, and Cenozoic are three major eras in the geologic time scale.

1. Paleozoic Era: This era lasted from about 541 million years ago to 252 million years ago. It is known as the "Age of Invertebrates" because it saw the rise and dominance of marine invertebrates such as trilobites and brachiopods. The Paleozoic also saw the evolution of fish, amphibians, and early reptiles.

2. Mesozoic Era: This era lasted from about 252 million years ago to 66 million years ago. It is known as the "Age of Dinosaurs" because dinosaurs were the dominant land animals during this time. The Mesozoic also saw the evolution of birds, mammals, and flowering plants.

3. Cenozoic Era: This era began about 66 million years ago and continues to the present day. It is known as the "Age of Mammals" because mammals became the dominant land animals after the extinction of the dinosaurs. The Cenozoic also saw the evolution of humans and the diversification of mammals into a wide range of species.

Mesozoic