geologic period
| PERMIAN |
| CAMBRIAN |
| DEVONIAN |
| JURASSIC |
| SILURIAN |
| TRIASSIC |
| PALEOGENE |
| CRETACEOUS |
| ORDOVICIAN |
| CARBONIFEROUS |
List of words for the clue geologic period from the crossword:
EON ERA EONS EPOCH ERAS AEON AGE NEOCENE ICEAGE EPOCHS AZOIC EOCENE AEONS | Word | Clue |
|---|---|
| AGE | era, period |
| ERA | period, epoch |
| NAP | short period of sleep |
| LULL | period of rest |
| STILL | period of calm |
| VIGIL | Period of intentional sleeplessness |
| FREEZE | period of intensely cold weather |
| SEASON | interval, period |
| INFANCY | period of childhood |
| DOWNTIME | period when a system is unavailable |
| INTERVAL | period, pause |
| TIMESPAN | period |
| POLE | geographic or magnetic |
| SERIES | geometric or time |