| Era | Period | % Correct |
|---|---|---|
| Jurassic | 83%
| |
| Paleozoic | Cambrian | 67%
|
| Mesozoic | Triassic | 67%
|
| Devonian | 50%
| |
| Permian | 50%
| |
| Silurian | 50%
| |
| Cretaceous | 33%
| |
| Ordovician | 33%
| |
| Carboniferous | 17%
| |
| Quaternary | 17%
| |
| Cenozoic | Tertiary | 17%
|