Crossword puzzle clue "significant time periods"

Here are the possible solutions for significant time periods clue

Answer
Clue
Relevancy
eras
Clue
Significant time periods
Significant periods
Significant periods of history
Significant periods in history
Historically significant periods
Definition
ERA, a main division of geological time
eon
Clue
Periods upon periods
Definition
a long period of time, also AEON
epoch
Clue
Significant time
Definition
an important period of time, also EPOCHA
era
Clue
Significant time period
Definition
a main division of geological time

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