|
|
|
|
Topic |
Age |
When(Ma) |
Time |
Earth's Formation |
|
4600 |
12:00 |
First Rocks |
Archean |
3800 |
2:05 |
Single-Celled Organisms |
Archean |
3600 |
2:36 |
Shellfish |
Early Cambrian |
540 |
10:36 |
Fish |
Ordovician |
480 |
10:45 |
Land Plants |
Late Silurian |
410 |
10:55 |
Insects |
Devonian |
400 |
10:57 |
Amphibians |
Devonian |
370 |
11:02 |
Reptiles |
Carboniferous |
340 |
11:07 |
Conifers |
Carboniferous |
320 |
11:10 |
Dinosaurs |
Late Triassic |
230 |
11:23 |
Mammals |
Late Triassic |
210 |
11:27 |
Birds |
Late Jurassic |
145 |
11:37 |
Flowering Plants |
Early Cretaceous |
125 |
11:40 |
Last Dinosaurs |
Late Cretaceous |
65 |
11:50 |
Grass |
Miocene |
25 |
11:56 |
Humans |
Holocene |
3 |
11:59 |
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