Term
| 4.56billion years before the present. |
|
Definition
|
|
Term
| 4.4 billion years before the present. |
|
Definition
| Oldest mineral grain found |
|
|
Term
| 4.1 billion years before the present. |
|
Definition
| Oldest piece of rock ever found |
|
|
Term
| 3.9 billion years before the present. |
|
Definition
| Oldest evidence of a continent |
|
|
Term
| 3.8 billion years before present. |
|
Definition
|
|
Term
| 3.5 billion years before present. |
|
Definition
| First fossils (algae and bacteria) |
|
|
Term
| 1.8 billion years before present. |
|
Definition
|
|
Term
| 1.1 billion years before present. |
|
Definition
| First fossil of a complex organism (a worm) |
|
|
Term
| 540 million years before present. |
|
Definition
| First abundant life found in the rock record |
|
|
Term
| 460 million years before present. |
|
Definition
|
|
Term
| 440 million years before present. |
|
Definition
|
|
Term
| 410 million years before present. |
|
Definition
|
|
Term
| 250 million years before present. |
|
Definition
|
|
Term
| 247 million years before present. |
|
Definition
|
|
Term
| 240 million years before present. |
|
Definition
|
|
Term
| 220 million years before present. |
|
Definition
| Break-up of sugar continent Pangaea begins |
|
|
Term
| 145million years before present. |
|
Definition
|
|
Term
| 65 million years before present. |
|
Definition
| Dinosaurs and other animals go extinct |
|
|
Term
| 30 million years before present. |
|
Definition
| Mammals/Flowering plants become abundant |
|
|
Term
| 5 million years before present. |
|
Definition
|
|
Term
| 1.8 million years before present. |
|
Definition
| first primate in genus homo |
|
|
Term
|
Definition
|
|
Term
|
Definition
| humans first inhabit North america |
|
|
Term
|
Definition
|
|
Term
|
Definition
| founding of jericho, the first known city |
|
|
Term
|
Definition
| roman domination of the known world. |
|
|
Term
|
Definition
| european rediscovery of the americas |
|
|
Term
|
Definition
| Humans first explore the moon |
|
|
