Term
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Definition
| 11,000 years ago to present, age of man |
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Term
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Definition
| 1.8 MYA to 11,000 years ago, most recent ice age, age of man |
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Term
|
Definition
| 5.3 MYA to 1.8 MYA, age of mammals |
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Term
|
Definition
| 23.8 MYA to 5.3 MYA, age of mammals |
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Term
|
Definition
| 33.7 MYA to 23.8 MYA, age of mammals |
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Term
|
Definition
| 54.8 MYA to 33.7 MYA, age of mammals |
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Term
|
Definition
| 65 MYA to 54.8 MYA, beginning of Tertiary, began after extinction of dinosaurs |
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Term
|
Definition
| 144 MYA to 65 MYA, age of reptiles ended with mass extinction of dinosaurs |
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Term
|
Definition
| 206 MYA to 144 MYA, age of reptiles |
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Term
|
Definition
| 251 MYA to 206 MYA, age of reptiles |
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Term
|
Definition
| 290 MYA to 251 MYA, age of amphibians |
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|
Term
| Carboniferous-Pennslvanian |
|
Definition
| 323 MYA to 290 MYA, age of amphibians |
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|
Term
| Carboniferous-Mississippian |
|
Definition
| 354 MYA to 323 MYA, age of amphibians |
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Term
|
Definition
| 417 MYA to 354 MYA, age of fish |
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Term
|
Definition
| 443 MYA to 417 MYA, age of fish |
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Term
|
Definition
| 490 MYA to 443 MYA, age of invertebrates |
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Term
|
Definition
| 543 MYA to 490 MYA, age of invertebrates |
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Term
|
Definition
| 2.5 BYA to 543 MYA, Pre-Cambrian Time |
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Term
|
Definition
| 3.85 BYA to 2.5 BYA, Pre-Cambrian Time, earth was all volcanic rock |
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Term
|
Definition
| 4.5 BYA to 3.85 BYA, formation of the earth |
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Term
|
Definition
| 65 MYA to Present, Oldest to Youngest Paleocene, Miocene, Oligocene, Miocene, Pliocene, Pleistocene, Holocene |
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|
Term
|
Definition
| 251 MYA to 65 MYA, Oldest to Youngest, Triassic, Jurassic, Cretaceous |
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|
Term
|
Definition
| 542 MYA to 251 MYA, Oldest to Youngest, Cambrian, Ordivician, Silurian, Devonian, Carboniferous (Miss, Pen) Permian |
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|
Term
|
Definition
| 4.5 BYA to 542 MYA, Oldest to Youngest, Hadean, Archean, Proterozoic |
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