Not that weâd expect less after the cliffhanger last season. If you havenât yet watched the September 23rd premiere of Chicago Fire, and somehow have managed not to find out who died, donât keep reading. If you have, please join me in my misery.
The Precambrian Super-Eon lasted from the formation of Earth 4,567 million years ago until the start of the Pharerozoic Eon 542 million years ago. It lasted 4.025 billion years. 90% of Earth's history.
How long did the precambrian last? There is some debate among experts, but it is generally accepted that the Precambrian lasted from 3.9 to 4 billion years. This time period is made up of three eras which a â¦ re the Paleoproterozoic, the Mesoproterozoic, and the Neoproterozoic era.