* Mesozoic: Middle life (e.g., the Mesozoic Era, characterized by dinosaurs)
* Paleozoic: Ancient life (e.g., the Paleozoic Era, known for the emergence of diverse life forms)
* Cenozoic: Recent life (e.g., the Cenozoic Era, encompassing the rise of mammals and humans)
Other prefixes used less frequently, but still relevant, include:
* Neozoic: New life (often used to refer to the current geological epoch)
* Archeozoic: Ancient life (sometimes used interchangeably with Paleozoic)
* Proterozoic: Early life (an era before the Paleozoic)
The prefix you choose depends on the specific geological time period or type of life you want to describe.