History of the Earth Part 2: Phanerozoic Eon – Paleozoic Era

We just cruised through the Hadean, Archean, and Proterozoic eons. That brings us all the way to the Phanerozoic eon, which is the one we are still living in today. This is split up into the Paleozoic, Mesozoic, and Cenozoic eras, so let's hit these eras one at a time, since so much happened in each one. First up, the Paleozoic era!