| Answer | Crossword Clue |
|---|---|
| EON | Longest time division |
| AEON | Longest division of geological time |
| EON | Longest division of geologic time |
| EON | Longest division of geological time |
| AEON | Longest division of geological time (var.) |
| EON | Longest division of time, in geology |
| AEON | Longest division of geological time (Var.) |
| EON | The longest division of geologic time |
