| ** Geology Chronological Table ** | |||||
| September 30, 2000 | |||||
| Era | Period | Epoch | Chronology (million years) |
Event | |
| Cenozoic | Quaternary | Holocene | 0.01 | ||
| Pleistocene | 2 | human appeared glacial epoch |
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| Tertiary | Neogene | Pliocene | 5.2 | ||
| Miocene | 25 | ||||
| Palaeogene | Oligocene | 38 | |||
| Eocene | 55 | ||||
| Palaeocene | 6500 | mammalia appeared | |||
| Mesozonic | Cretaceous | 143 | dinosaurs became extinct heyday of anmonite |
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| Jurassic | 212 | heyday of dinosaurs | |||
| Triassic | 247 | ||||
| Palaeozoic | Permian | 289 | trilobita became extinct gymnosperme appeared |
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| Carboniferous | 367 | amphibia appeared | |||
| Devonian | 415 | ||||
| Silurian | 446 | ||||
| Ordovician | 500 | heyday of trilobita | |||
| Cambrian | 575 | ||||
| Precambrian | 3500 | life came | |||
| 4500 | earth came | ||||
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