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 LENT CENE EOCENE IRONAGE YEAR AEONS TERM DAY PHASE