The Age of The Earth

The age of the Earth is divided into 1 eon or 4 eras. These 4 eras housed creatures so bizarre, they looked like they could be the main characters in a 21st century sci-fi movie. Would you believe that it all started from 1, single, cell, which started to make oxygen while some other stray cells used that oxygen? Eventually, they formed colonies, and grew bigger and bigger...

The names of these unique, magnificent eras were the Pre-Cambrian (4.6 Ga (billion years ago), Paleozoic (544 million years ago), Mesozoic (250 mya), and finally, the one that houses us, the Cenzoic (65.5 mya to present). When we’re studying dinosaurs, we’ll be looking at the famed Mesozoic Era.

Now, we are going to venture into geological measurements and notations. The Mesozoic houses the Triassic, the Jurassic and the Cretaceous. These are again divided into epochs; Early, Middle and Late ( in the case of the Cretaceous; Early and Late).