| Eon | Era | Period | Epoch | Time Ago | Events | Mass Extinction |
|---|---|---|---|---|---|---|
| Phanerozoic | Cenozoic | Quaternary | Anthropocene | 0 | Humans alter Earth's geology, ecology, and biology to make their dreams come true. | |
| Phanerozoic | Cenozoic | Quaternary | Holocene | 0.0117 Ma | Humans civilize Earth, leave in rockets, return (no Plan B). | |
| Phanerozoic | Cenozoic | Quaternary | Pleistocene | 2.6 Ma | Humans and Neanderthals hit it off. | |
| Phanerozoic | Cenozoic | Neogene | Pliocene | 5.3 Ma | Human relatives appear, walk upright, use tools. | |
| Phanerozoic | Cenozoic | Neogene | Miocene | 23 Ma | Climates warm, grassland flourish, flowering species run riot. | |
| Phanerozoic | Cenozoic | Paleogene | Oligocene | 34 Ma | Whales evolve ultrasonic hearing, largest land mammal appears. | |
| Phanerozoic | Cenozoic | Paleogene | Eocene | 56 Ma | Seasons return, early horses debut, whales take to the sea." | |
| Phanerozoic | Cenozoic | Paleogene | Paleocene | 66 Ma | Mass extinction of flora and fauna, tiny mammals are fruitful and multiply. | 85% |
| Phanerozoic | Mesozoic | Cretaceous | ~145 Ma | Flowering plants thrive, modern animals make an entrance. | ||
| Phanerozoic | Mesozoic | Jurassic | 201 Ma | Dinosaurs abound, insects get larger when oxygen levels rises. | ||
| Phanerozoic | Mesozoic | Triassic | 252 Ma | Dinosaurs, flying reptiles, and mammals appear as Pangaea drifts. | 85% | |
| Phanerozoic | Paleozoic | Permian | 299 Ma | Supercontinent Pangaea comes together. | 95% | |
| Phanerozoic | Paleozoic | Carboniferous | 359 Ma | Reptiles evolve, trilobites become few, oxygen rises. | ||
| Phanerozoic | Paleozoic | Devonian | 419 Ma | The first insects and forests evolve in the Age of Fishes | 70% | |
| Phanerozoic | Paleozoic | Silurian | 444 Ma | Plants and arachnids conquer land, coral reefs colonize the shallows. | ||
| Phanerozoic | Paleozoic | Ordovician | 485 Ma | Marine species thrive, first life on land ends in 20 Ma ice age. | 85% | |
| Phanerozoic | Paleozoic | Cambrian | 541 Ma | Trilobites predominate during evolutionary. Cambrian Explosion. | ||
| Precambrian | Proterozoic | ~2500 Ma | Oldest macroscopic organism known. | |||
| Precambrian | Archean | ~4000 Ma | Life begins, evolves, leaves first fossils. | |||
| Precambrian | Hadean | ~4600 Ma | Earth forms. |
Other resources: