Crossword puzzle clue "geological time periods"

Here are the possible solutions for geological time periods clue

Answer
Clue
Relevancy
eons
Clue
Geological time periods
Geological periods
Extremely long periods in geological history
Definition
EON, a long period of time, also AEON
eras
Clue
Geological time periods
Geological periods
Five geological periods
Geological periods
Definition
ERA, a main division of geological time
epochs
Clue
Geological periods
Definition
EPOCH, an important period of time, also EPOCHA

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