| Answer | Crossword Clue |
|---|---|
| ERAS | Major divisions of geological time |
| ERAS | Divisions of geological time. |
| EONS | Grand divisions of geological time. |
| EONS | Geological time divisions |
| ERA | Major division of geological time |
| ERAS | Geological divisions |
| EONS | Geological divisions |
| EPOCHS | Geological period divisions |
