EONS

earliest eon in Earth's history, and is named after Hades, the Greek god of the underworld

Hadean Eon

time of intense volcanic activity and bombardment by asteroids and comets

Hadean Eon

The Earth's crust was forming during this time, and the atmosphere was composed of mostly carbon dioxide and water vapor

Hadean Eon

named after the Greek word "arkhaios," meaning "ancient."

Archean Eon

It was a time of great change on Earth, as the planet cooled and life began to emerge.

Archean Eon

The first single-celled organisms appeared during this eon, as well as the first cyanobacteria, which began to produce oxygen.

Archean Eon

is named after the Greek words "protos," meaning "first," and "zoe," meaning "life."

Proterozoic Eon

was a time of great diversification of life, with the first animals appearing during this time

Proterozoic Eon

also saw the development of the first multicellular organisms, as well as the first complex ecosystems

Proterozoic Eon

the eon of visible life

Phanerozoic Eon

is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic.

Phanerozoic Eon

amed after the Greek words "phaneros," meaning "visible," and "zoe," meaning "life."

Phanerozoic Eon

It is the eon in which we live, and is characterized by the emergence of all major groups of plants and animals.

Phanerozoic Eon