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Phanerozoic eon

The Eon consisting of the Paleozoic, Mesozoic, and Cenozoic eras. Or consisting of the one in which conscious life’s was formed.
Wow dude we are in the Phanerozoic Eon
by Chairssssss October 8, 2020
mugGet the Phanerozoic eonmug.

dirty eon

A Dirty Eon is when a guy is having anal sex with a girl and pulls out his penis with poop still on it and drags it on the girls forehead and down her noise it the shape of a T. It is a mix of a Dirty Sanchez and A T-Bone.
My girl said anal was hurting so i pulled it out and gave her a Dirty Eon on her face.
by Fart42069 July 12, 2021
mugGet the dirty eonmug.

Proterozoic Eon

Comprising of the Paleoproterozoic, Mesoproterozoic and Neoproterozoic Eras, This eon spans from 2.5 billion years ago to 541 million years ago lasting almost 2 billion years.

During the beginning of this eon, cyanobacteria rapidly reproduced and photosynthesized turning a lot of carbon dioxide to oxygen. This oxygen reacted with the iron in the oceans, filling the oceans with iron rust BIFs, turning the oceans blood red. Later, there was no longer enough iron to hold onto the oxygen, and it escaped into the atmosphere. That oxygen formed the ozone layer. Nearly all of the carbon dioxide turned into oxygen, turning earth into a snowball earth.

The snowball earth quickly recovered after 300 million years. Then, supercontinent Columbia formed. For the next billion years, climate remained notably stable. This period of time from 1.8 billion years to 800 million years ago was called "The boring billion". During this period, supercontinent Rodinia formed, but broke apart. The rocks that became exposed sucked up more carbon dioxide from volcanoes, turning earth into a second snowball earth.

After that recovered, the two halves of Rodinia reunited around the South Pole forming supercontinent Pannotia. However, it broke apart during the end of the eon just as animals started to appear, as Laurentia rifted away from the rest of the supercontinent. Finally, the End-Ediacaran extinction event took place to end the eon.
Imagine living during the middle of the Proterozoic Eon! There would be no plants, no animals, just water, land and bacteria!
by thealtf4psychic March 30, 2021
mugGet the Proterozoic Eonmug.

eon

eon is a twink
by urmum69696996 February 11, 2022
mugGet the eonmug.

mil-eon

they havnt been around 4 mil-eons
by eon eagle March 18, 2008
mugGet the mil-eonmug.

Walk the eon

you love trump like walk the eon
by xtcorz May 16, 2025
mugGet the Walk the eonmug.

Phanerozoic Eon

Comprising of the Paleozoic, Mesozoic and Cenozoic eras, this eon spans 541 million years from the Cambrian Explosion to today.

During the Paleozoic era, complex life started to appear. It took 100 million years for the aquatic plants and animals to migrate to land. Then, another 130 million years later, giant bugs started to appear. 60 million years later, entire coalfields from the Carboniferous Rainforest Collapse Event were set on fire by volcanic activity, causing the Permian-Triassic extinction. The Mesozoic era had begun.

20 million years later, dinosaurs started to appear. They died altogether during the Cretaceous-Paleogene extinction 66 million years ago beginning the Cenozoic era. The mammals started to dominate land. 60 million years later, the Mediterranean Sea drained up, but quickly refilled due to closure and reopening of the Strait of Gibraltar. 6 million years later, humans finally appeared, ending the story of earth's life as we knew it.
We currently live in the Phanerozoic Eon, the fourth and final eon in earth's history.
by thealtf4psychic April 16, 2021
mugGet the Phanerozoic Eonmug.

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