For more information on continental drift and plate tectonics, click here.
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| ZOOM DINOSAURS |
Geologic Time Scale Short Version (Go to the long version) (mya = million years ago) |
ENCHANTED LEARNING SOFTWARE |
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For more information on continental drift and plate tectonics, click here. |
| EON | ERA | PERIOD | |
| P h a n e r o z o i c E o n "Visible Life" Organisms with skeletons or hard shells. 540 mya through today |
Cenozoic Era "Age of Mammals" 65 mya through today |
Quaternary Period "The Age of Man" 1.8 mya to today |
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| Tertiary Period 65 to 1.8 mya |
Neogene 24-1.8 mya |
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| Paleogene 65-24 mya |
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| Mesozoic
Era "Age of Reptiles" 248 to 65 mya |
Cretaceous Period 146 to 65 mya |
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| Jurassic Period 208 to 146 mya |
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| Triassic Period 248 to 208 mya |
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Paleozoic Era 540 to 248 mya |
Permian Period "Age of Amphibians" 280 to 248 mya |
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| Carboniferous 360 to 280 mya |
Pennsylvanian Period 325 to 280 mya |
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| Mississippian Period 360 to 325 mya |
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| Devonian Period,"The Age of Fishes" 408 to 360 mya |
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| Silurian Period, 438 to 408 mya | |||
| Ordovician Period, 505 to 438 mya | |||
| Cambrian Period, 540 to 500 mya |
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| Proterozoic Eon 2.5 billion years ago to 540 mya |
- | Vendian Period, 600 to 540 mya | |
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| Archeozoic Eon (Archean) 3.9 to 2.5 billion years ago |
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| Hadean Eon 4.6 to 3.9 billion years ago |
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