| Hint | Answer | % Correct |
|---|---|---|
| Jurassic | 92%
| |
| Triassic | 89%
| |
| Cambrian | 84%
| |
| Devonian | 77%
| |
| Cretaceous | 76%
| |
| Permian | 74%
| |
| Pre-cambrian | 74%
| |
| Silurian | 72%
| |
| Ordovician | 69%
| |
| Paleogene | 43%
| |
| Neogene | 42%
| |
| Mississippian | 38%
| |
| Pennsylvanian | 37%
|