Phanerozoic Eon | Geologic Time Scale with events |

The Phanerozoic Eon is part of the geologic timescale. This Eon consists of three major eras. The Paleozoic era, the Mesozoic era, and the Cenozoic era. The Paleozoic era is also called the "ancient life". Life echinoderms, trilobites, and jawless fish roamed the ocean along with sharks. Tetrapods crawled out of the ocean and started living on land. Insects began to spread along with reptiles and amphibians. The supercontinent Rodinia broke apart and then drifted back together creating Pangea. The Mesozoic era is called the "age of reptiles". Dinosaurs prospered during this era. The Cenozoic era can be called the "age of flowering plants" or the age of the insects." Mammals, flowering plants, and insects all prospered during this era.