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An overview of Earth.
| Age | Period | Time (mya) | Comments |
|---|---|---|---|
| Cenozoic | 6.5 | ||
| Mesozoic | 248 | Age of Dinosaurs | |
| Paleozoic | |||
| Permian | 286 | ||
| Pennsylvanian | 320 | ||
| Mississipian | 360 | ||
| Devonian | 417 | ||
| Silurian | 443 | ||
| Ordovician | 495 | ||
| Cambrian | 545 | ||
| PreCambrian | 2,500 | Earth is formed |
|
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