ALL MEDIA BY TIME PERIOD

Geologic time scale

PRECAMBRIAN SUPEREON

HADEAN EON: 4.54 — 4 BILLION YEARS AGO

ARCHEAN EON: 4 — 2.5 BILLION YEARS AGO

Eoarchean Era (4 to 3.6 billion years ago)

Paleoarchean Era (3.6 to 3.2 billion years ago)

Mesoarchean Era (3.2 to 2.8 billion years ago)

Neoarchean Era (2.8 to 2.5 billion years ago)

Proterozoic EON: 2.5 BILLION — 538 MILLION YEARS AGO

Paleoproterozoic Era (2.5 to 1.6 billion years ago)

Siderian Period (2.5 to 2.3 billion years ago)

Rhyacian Period (2.2 to 2 billion years ago)

Orosirian Period (2 to 1.8 billion years ago)

Statherian Period (1.8 to 1.6 billion years ago)

Mesoproterozoic Era (1.6 to 1 billion years ago)

Calymmian Period (1.6 to 1.4 billion years ago)

Ectasian Period (1.4 to 1.2 billion years ago)

Stenian Period (1.2 to 1 billion years ago)

Neoproterozoic Era (1 billion to 538 million years ago)

Tonian Period (1 billion to 720 million years ago)

Cryogenian Period (720 to 635 million years ago)

Ediacaran Period (635 to 538 million years ago)