The Phanerozoic Eon

The Phanerozoic Eon is the current eon in Earth's geological history, starting around 541 million years ago and continuing to today. It is characterized by the abundance of fossil evidence and the emergence of complex life forms, including plants, animals, and fungi. Divided into three major eras—Paleozoic, Mesozoic, and Cenozoic—this eon saw significant events like the rise of dinosaurs, the development of mammals, and the evolution of humans. Understanding the Phanerozoic helps scientists study the planet's biological and environmental changes over millions of years.