What are the 4 eras of early earths history?

The four eras of early Earth's history are the Hadean, Archean, Proterozoic, and Phanerozoic. The Hadean (about 4.6 to 4 billion years ago) is characterized by the formation of the Earth and its initial cooling. The Archean (4 to 2.5 billion years ago) saw the formation of the first stable crust and the emergence of simple life forms. The Proterozoic (2.5 billion to 541 million years ago) featured significant geological and biological developments, including the rise of multicellular life, while the Phanerozoic (541 million years ago to present) is marked by the abundant fossil record and the diversification of life forms.